10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark one)

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2017

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number 0-22462

GIBRALTAR INDUSTRIES, INC.

(Exact name of Registrant as specified in its charter)

Delaware	16-1445150
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
3556 Lake Shore Road, P.O. Box 2028 Buffalo, New York	14219-0228
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (716) 826-6500

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by checkmark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definition of “large accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer	x	Accelerated filer	¨	Non-accelerated filer	¨	Smaller reporting company	¨
						Emerging growth company	¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicated by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act.).    Yes  ¨    No  x

As of November 1, 2017, the number of common shares outstanding was: 31,688,154.

GIBRALTAR INDUSTRIES, INC.

INDEX

		PAGE NUMBER
PART I.	FINANCIAL INFORMATION
Item 1.	Financial Statements
	Consolidated Statements of Operations for the Three and Nine Months Ended September 30, 2017 and 2016 (unaudited)	3
	Consolidated Statements of Comprehensive Income for the Three and Nine Months Ended September 30, 2017 and 2016 (unaudited)	4
	Consolidated Balance Sheets as of September 30, 2017 (unaudited) and December 31, 2016	5
	Consolidated Statements of Cash Flows for the Nine Months Ended September 30, 2017 and 2016 (unaudited)	6
	Consolidated Statement of Shareholders’ Equity for the Nine Months Ended September 30, 2017 (unaudited)	7
	Notes to Consolidated Financial Statements (unaudited)	8-32
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	33-42
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	42
Item 4.	Controls and Procedures	43
PART II.	OTHER INFORMATION
Item 1.	Legal Proceedings	43
Item 1A.	Risk Factors	43
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	43
Item 3.	Defaults Upon Senior Securities	43
Item 4.	Mine Safety Disclosures	43
Item 5.	Other Information	43
Item 6.	Exhibits	44

2

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share data)

(unaudited)

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017			2016
Net Sales	$	274,574	$	272,734	$	728,806		$	776,143
Cost of sales	205,839		204,847		548,991			585,263
Gross profit	68,735		67,887		179,815			190,880
Selling, general, and administrative expense	33,042		41,365		109,513			118,021
Income from operations	35,693		26,522		70,302			72,859
Interest expense	3,486		3,625		10,612			10,982
Other expense	404		159		811			8,319
Income before taxes	31,803		22,738		58,879			53,558
Provision for income taxes	11,184		8,952		21,090			12,131
Income from continuing operations	20,619		13,786		37,789			41,427
Discontinued operations:
Loss before taxes	—		—		(644		)	—
Benefit of income taxes	—		—		(239		)	—
Loss from discontinued operations	—		—		(405		)	—
Net income	$	20,619	$	13,786	$	37,384		$	41,427
Net earnings per share – Basic:
Income from continuing operations	$	0.65	$	0.44	$	1.19		$	1.32
Loss from discontinued operations	—		—		(0.01		)	—
Net income	$	0.65	$	0.44	$	1.18		$	1.32
Weighted average shares outstanding – Basic	31,703		31,579		31,700			31,493
Net earnings per share – Diluted:
Income from continuing operations	$	0.64	$	0.43	$	1.17		$	1.29
Loss from discontinued operations	—		—		(0.01		)	—
Net income	$	0.64	$	0.43	$	1.16		$	1.29
Weighted average shares outstanding – Diluted	32,210		32,176		32,216			32,005

See accompanying notes to consolidated financial statements.

3

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

(unaudited)

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2017			2016			2017			2016
Net income	$	20,619		$	13,786		$	37,384		$	41,427
Other comprehensive income (loss):
Foreign currency translation adjustment	1,581			(193		)	3,351			10,638
Adjustment to retirement benefit liability, net of tax	(2		)	61			(8		)	59
Adjustment to post employment health care benefit liability, net of tax	29			38			88			114
Other comprehensive income (loss)	1,608			(94		)	3,431			10,811
Total comprehensive income	$	22,227		$	13,692		$	40,815		$	52,238

See accompanying notes to consolidated financial statements.

4

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATED BALANCE SHEETS

(in thousands, except per share data)

	September 30, 2017			December 31, 2016
	(unaudited)
Assets
Current assets:
Cash and cash equivalents	$	208,032		$	170,177
Accounts receivable, net	166,718			124,072
Inventories	85,156			89,612
Other current assets	8,195			7,336
Total current assets	468,101			391,197
Property, plant, and equipment, net	94,488			108,304
Goodwill	321,093			304,032
Acquired intangibles	107,943			110,790
Other assets	4,672			3,922
	$	996,297		$	918,245
Liabilities and Shareholders’ Equity
Current liabilities:
Accounts payable	$	96,181		$	69,944
Accrued expenses	83,264			70,392
Billings in excess of cost	18,234			11,352
Current maturities of long-term debt	400			400
Total current liabilities	198,079			152,088
Long-term debt	209,425			209,237
Deferred income taxes	38,162			38,002
Other non-current liabilities	45,200			58,038
Shareholders’ equity:
Preferred stock, $0.01 par value; authorized 10,000 shares; none outstanding	—			—
Common stock, $0.01 par value; authorized 50,000 shares; 32,275 shares and 32,085 shares issued and outstanding in 2017 and 2016	322			320
Additional paid-in capital	269,880			264,418
Retained earnings	249,386			211,748
Accumulated other comprehensive loss	(4,290		)	(7,721		)
Cost of 588 and 530 common shares held in treasury in 2017 and 2016	(9,867		)	(7,885		)
Total shareholders’ equity	505,431			460,880
	$	996,297		$	918,245

See accompanying notes to consolidated financial statements.

5

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)(unaudited) 

	Nine Months Ended   September 30,
	2017			2016
Cash Flows from Operating Activities
Net income	$	37,384		$	41,427
Loss from discontinued operations	(405		)	—
Income from continuing operations	37,789			41,427
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,427			17,551
Stock compensation expense	5,069			4,666
Net gain on sale of assets	(139		)	(225		)
Loss on sale of business	—			8,763
Exit activity (recoveries) costs, non-cash	(1,931		)	3,876
(Benefit of) provision for deferred income taxes	(136		)	355
Other, net	1,411			735
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable	(42,310		)	3,796
Inventories	2,016			9,738
Other current assets and other assets	(2,002		)	(1,901		)
Accounts payable	25,134			2,367
Accrued expenses and other non-current liabilities	7,503			11,038
Net cash provided by operating activities	48,831			102,186
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	(18,494		)	(2,314		)
Net proceeds from sale of property and equipment	12,935			249
Purchases of property, plant, and equipment	(5,152		)	(7,600		)
Net proceeds from sale of business	—			8,250
Other, net	—			1,118
Net cash used in investing activities	(10,711		)	(297		)
Cash Flows from Financing Activities
Long-term debt payments	(400		)	(400		)
Payment of debt issuance costs	—			(54		)
Purchase of treasury stock at market prices	(1,982		)	(1,178		)
Net proceeds from issuance of common stock	649			2,892
Net cash (used in) provided by financing activities	(1,733		)	1,260
Effect of exchange rate changes on cash	1,468			1,055
Net increase in cash and cash equivalents	37,855			104,204
Cash and cash equivalents at beginning of year	170,177			68,858
Cash and cash equivalents at end of period	$	208,032		$	173,062

See accompanying notes to consolidated financial statements.

6

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATED STATEMENT OF SHAREHOLDERS’ EQUITY

(in thousands)

(unaudited)

	Common Stock			Additional Paid-In Capital			Retained Earnings		Accumulated Other Comprehensive Loss			Treasury Stock				Total Shareholders’ Equity
	Shares	Amount										Shares	Amount
Balance at December 31, 2016	32,085	$	320	$	264,418		$	211,748	$	(7,721	)	530	$	(7,885	)	$	460,880
Net income	—	—		—			37,384		—			—	—			37,384
Foreign currency translation adjustment	—	—		—			—		3,351			—	—			3,351
Adjustment to retirement benefit liability, net of taxes of ($5)	—	—		—			—		(8		)	—	—			(8		)
Adjustment to post employment health care benefit liability, net of taxes of $54	—	—		—			—		88			—	—			88
Stock compensation expense	—	—		5,069			—		—			—	—			5,069
Cumulative effect of accounting change (see Note 2)	—	—		(254		)	254		—			—	—			—
Stock options exercised	40	—		649			—		—			—	—			649
Issuance of restricted stock	2	—		—			—		—			—	—			—
Net settlement of restricted stock units	148	2		(2		)	—		—			58	(1,982		)	(1,982		)
Balance at September 30, 2017	32,275	$	322	$	269,880		$	249,386	$	(4,290	)	588	$	(9,867	)	$	505,431

See accompanying notes to consolidated financial statements.

7

GIBRALTAR INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

1. CONSOLIDATED FINANCIAL STATEMENTS

The accompanying unaudited consolidated financial statements have been prepared by management in accordance with U.S. generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. In the opinion of management, all adjustments consisting of normal recurring adjustments considered necessary for the fair presentation of results for the interim period have been included. The results of operations for the three and nine month periods ended September 30, 2017 are not necessarily indicative of the results expected for the full year. The Company is subject to reduced activity in the first and fourth quarters as colder, inclement weather reduces order rates from end markets it serves. The accompanying unaudited consolidated financial statements should be read in conjunction with the financial statements and notes thereto included in our annual Form 10-K for the year ended December 31, 2016.

Certain prior year amounts have been reclassified to conform to current year's presentation. Refer to Note 2 for a summary of ASUs we adopted during 2017 and the related financial statement impact.

2. RECENT ACCOUNTING PRONOUNCEMENTS

Recent Accounting Pronouncements Adopted

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2016-09 Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting	The standard simplifies the accounting for share-based payment award transactions including: income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. The provisions of this standard are effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption is permitted.	The Company has adopted all amendments included in this standard under each required transition method.  The Company concluded there were no material changes to prior periods, except for the following: the Company (a) reclassified its prior interim period excess tax benefit for stock compensation of $941,000 on its consolidated statement of cash flows from a financing activity to an operating activity; and (b) recognized a cumulative-effect adjustment of $254,000 as an increase to retained earnings and decrease to additional paid-in capital on the Company's consolidated statement of shareholders' equity as of January 1, 2017 to reflect the change in value for a restricted stock unit liability award as of December 31, 2016, as if the award had been classified as an equity award since its respective grant date. Date of adoption: Q1 2017

8

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment	The standard eliminates the "Step 2" analysis to determine the amount of impairment realized when a reporting unit's carrying amount exceeds its fair value in its "Step 1" analysis of accounting for impairment of goodwill. The impairment charge would be the amount determined in "Step 1." The provisions of this standard are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for annual and interim goodwill impairment testing dates after January 1, 2017.	The Company has adopted this standard and it did not have any impact on the Company's consolidated financial statements. Date of Adoption: Q1 2017
ASU No. 2017-07 Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	The standard requires an employer to recognize the service cost component of net periodic pension costs and net periodic postretirement benefit costs in the same line item(s) as other compensation costs from services rendered by pertinent employees during the period. Other components of net benefit cost are required to be presented separately from the service cost component and outside a subtotal of income from operations. The provisions of this standard are effective for annual reporting periods beginning after December 15, 2017, including interim periods within those annual periods. Early adoption is permitted as of the beginning of an annual period for which financial statements (interim or annual) have not been issued or made available for issuance.	The Company has adopted this standard and has applied it retrospectively for the presentation of the service cost component, as well as, other components of net periodic pension cost and net periodic postretirement benefit cost in our statement of operations. The adoption decreased selling, general, and administrative expense by $159,000 for the three months ended September 30, 2016 and $479,000 for the nine months ended September 30, 2016, and comparably increased other expense by the same amounts, respectively. This guidance did not have any impact on our balance sheet or our statement of cash flows. Date of Adoption: Q1 2017

Recent Accounting Pronouncements Not Yet Adopted

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2014-09 Revenue from Contracts with Customers (Topic 606) And All Related ASUs	The standard requires an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also requires additional disclosures about the nature, amount, timing, and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and assets recognized from costs incurred to obtain or fulfill a contract. The provisions of the standard, as well as all subsequently issued clarifications to the standard, are effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. The standard can be adopted using either a full retrospective or modified retrospective approach.	The Company currently believes the most significant impact of this standard upon adoption relates to the revenue recognition for custom fabricated products within the Company's Industrial and Infrastructure Products segment. Under this standard, the Company expects to recognize revenue on an over time basis on custom fabricated products in the Industrial and Infrastructure Products segment which is a change from our current revenue recognition policy of point-in-time basis. The Company expects revenue recognition related to the remaining Industrial and Infrastructure Products segment, Residential Products segment and Renewable Energy and Conservation segment to remain substantially unchanged upon adoption of this standard. The Company has identified and is in the process of implementing appropriate changes to the Company's business processes, systems and internal controls to support recognition and disclosure under this standard. The Company currently anticipates adopting the modified retrospective transition method approach. The Company has not yet completed the process of quantifying the effects of any changes that will result from adoption. Planned date of adoption: Q1 2018

9

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2016-02 Leases (Topic 842)	The standard requires lessees to recognize most leases as assets and liabilities on the balance sheet, but record expenses on the statement of operations in a manner similar to current accounting. For lessors, the guidance modifies the classification criteria and accounting for sales-type and direct financing leases. The standard also requires additional disclosures about leasing arrangements and requires a modified retrospective transition approach for existing leases, whereby the standard will be applied to the earliest year presented. The provisions of the standard are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted.	The Company is currently evaluating the impact of this standard on the Company's consolidated financial statements and related disclosures, including the impact on the Company's current lease portfolio from both a lessor and lessee perspective. The adoption of this standard will primarily result in an increase in the assets and liabilities on the Company's consolidated balance sheet and related disclosures. Planned date of adoption: Q1 2019
ASU No. 2016-15 Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments	The standard provides guidance on eight specific cash flow issues to reduce diversity in reporting. The provisions of this standard are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted.	The Company is currently evaluating the requirements of this standard and has not yet determined its impact on the Company's consolidated financial statements. Planned date of adoption: Q1 2018
ASU No. 2016-16 Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory	The standard allows an entity to recognize income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. The provisions of this standard are effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. Early adoption is permitted as of the beginning of an annual reporting period for which financial statements (interim or annual) have not been issued or made available for issuance.	The Company is currently evaluating the requirements of this standard and has not yet determined its impact on the Company's consolidated financial statements. Planned date of adoption: Q1 2018

3. ACCOUNTS RECEIVABLE, NET

Accounts receivable consists of the following (in thousands):

	September 30, 2017			December 31, 2016
Trade accounts receivable	$	104,031		$	81,193
Contract receivables:
Amounts billed	49,866			41,569
Costs in excess of billings	18,374			6,582
Total contract receivables	68,240			48,151
Total accounts receivable	172,271			129,344
Less allowance for doubtful accounts	(5,553		)	(5,272		)
Accounts receivable	$	166,718		$	124,072

Contract receivables are primarily associated with developers, contractors and customers in connection with the Renewable Energy and Conservation segment. Costs in excess of billings principally represent revenues recognized on contracts that were not billable as of the balance sheet date. These amounts will be billed in accordance with contract terms, generally as certain milestones are reached or upon shipment. All of the costs in excess of billings are expected to be collected within one year. In situations where billings exceed revenues recognized, the excess is included in billings in excess of cost in the Consolidated Balance Sheet.

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4. INVENTORIES

Inventories consist of the following (in thousands):

	September 30, 2017		December 31, 2016
Raw material	$	41,569	$	41,758
Work-in-process	12,123		12,268
Finished goods	31,464		35,586
Total inventories	$	85,156	$	89,612

5. ACQUISITIONS

On February 22, 2017, the Company acquired all of the outstanding stock of Package Concierge. Package Concierge is a leading provider of multifamily electronic package delivery locker systems in the United States.

The acquisition of Package Concierge is expected to enable the Company to expand its position in the fast-growing package delivery solutions market. The results of Package Concierge have been included in the Company's consolidated financial results since the date of acquisition (within the Company's Residential Products segment). The final aggregate purchase consideration for the acquisition of Package Concierge was $18,917,000, which includes a working capital adjustment and certain other adjustments provided for in the stock purchase agreement.

The purchase price for the acquisition was allocated to the assets acquired and liabilities assumed based upon their respective fair values. The excess consideration was recorded as goodwill and approximated $16,863,000, which is not deductible for tax purposes. Goodwill represents future economic benefits arising from other assets acquired that could not be individually identified including workforce additions, growth opportunities, and increased presence in the building products markets.

The allocation of the purchase consideration to the fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands):

Cash	$	590
Working capital	(2,071		)
Property, plant and equipment	55
Acquired intangible assets	3,600
Other assets	8
Deferred income taxes	(128		)
Goodwill	16,863
Fair value of purchase consideration	$	18,917

The intangible assets acquired in this acquisition consisted of the following (in thousands):

	Fair Value		Estimated Useful Life
Trademarks	$	600	Indefinite
Technology	1,300		10 years
Customer relationships	1,700		7 years
Total	$	3,600

On October 11, 2016, the Company acquired all of the outstanding stock of Nexus Corporation ("Nexus"). Nexus is a leading provider of commercial-scale greenhouses to customers in the United States.

11

The acquisition of Nexus is expected to enable the Company to strengthen its position in the commercial greenhouse market in the United States. The results of Nexus have been included in the Company's consolidated financial results since the date of acquisition (within the Company's Renewable Energy and Conservation segment). The final aggregate purchase consideration for the acquisition of Nexus was $23,762,000, which includes a working capital adjustment and certain other adjustments provided for in the stock purchase agreement. At December 31, 2016, $1,000,000 of the estimated purchase price was accrued. Upon settlement of the final purchase adjustments, $167,000 was paid in cash by the Company during the first quarter of 2017.

The purchase price for the acquisition was allocated to the assets acquired and liabilities assumed based upon their respective fair values. The excess consideration was recorded as goodwill and approximated $11,451,000, of which all is deductible for tax purposes.

The allocation of the purchase consideration to the fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands):

Cash	$	2,495
Working capital	(1,109		)
Property, plant and equipment	4,702
Acquired intangible assets	6,200
Other assets	23
Goodwill	11,451
Fair value of purchase consideration	$	23,762

The intangible assets acquired in this acquisition consisted of the following (in thousands):

	Fair Value		Estimated Useful Life
Trademarks	$	3,200	Indefinite
Technology	1,300		15 years
Customer relationships	800		11 years
Backlog	900		0.25 years
Total	$	6,200

The acquisitions of Package Concierge and Nexus were funded from available cash on hand. The Company incurred certain acquisition-related costs composed of legal and consulting fees, and these costs were recognized as a component of selling, general and administrative expenses in the consolidated statements of operations.

The following table summarizes acquisition-related costs for the three and nine months ended September 30 (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017		2016
Acquisition-related costs	$	31	$	—	$	146	$	31

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6. GOODWILL AND RELATED INTANGIBLE ASSETS

Goodwill

The changes in the carrying amount of goodwill for the nine months ended September 30, 2017 are as follows (in thousands):

	Residential Products		Industrial and Infrastructure Products		Renewable Energy & Conservation			Total
Balance at December 31, 2016	$	181,285	$	53,884	$	68,863		$	304,032
Acquired goodwill	16,863		—		—			16,863
Adjustments to prior year acquisitions	—		—		(832		)	(832		)
Foreign currency translation	—		432		598			1,030
Balance at September 30, 2017	$	198,148	$	54,316	$	68,629		$	321,093

Goodwill is recognized net of accumulated impairment losses of $235,419,000 as of September 30, 2017 and December 31, 2016.

Acquired Intangible Assets

Acquired intangible assets consist of the following (in thousands):

	September 30, 2017				December 31, 2016
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization		Estimated Life
Indefinite-lived intangible assets:
Trademarks	$	45,153	$	—	$	44,720	$	—	Indefinite
Finite-lived intangible assets:
Trademarks	5,882		2,921		5,808		2,427		5 to 15 Years
Unpatented technology	28,020		11,523		26,720		10,041		5 to 20 Years
Customer relationships	80,719		38,182		78,569		33,585		5 to 17 Years
Non-compete agreements	1,649		854		1,649		623		4 to 10 Years
Backlog	—		—		900		900		0.25 Years
	116,270		53,480		113,646		47,576
Total acquired intangible assets	$	161,423	$	53,480	$	158,366	$	47,576

The following table summarizes the acquired intangible asset amortization expense for the three and nine months ended September 30 (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017		2016
Amortization expense	$	2,208	$	2,159	$	6,600	$	6,541

Amortization expense related to acquired intangible assets for the remainder of fiscal 2017 and the next five years thereafter is estimated as follows (in thousands):

2017	$2,157
2018	$8,288
2019	$7,617
2020	$7,105
2021	$6,503
2022	$6,092

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7. LONG-TERM DEBT

Long-term debt consists of the following (in thousands):

	September 30, 2017			December 31, 2016
Senior Subordinated 6.25% Notes	$	210,000		$	210,000
Other debt	2,400			2,800
Less unamortized debt issuance costs	(2,575		)	(3,163		)
Total debt	209,825			209,637
Less current maturities	400			400
Total long-term debt	$	209,425		$	209,237

The Company's Fifth Amended and Restated Credit Agreement dated December 9, 2015 (the "Senior Credit Agreement") was amended to convert our secured asset based credit facility into a secured cash flow revolver, and terminates on December 9, 2020.

The Senior Credit Agreement provides for a revolving credit facility and letters of credit in an aggregate amount of $300 million. The Company has the option to request additional financing from the banks to either increase the revolving credit facility to $500 million or to provide a term loan of up to $200 million. The Senior Credit Agreement contains financial covenants. As of September 30, 2017, the Company is in compliance with all covenants.

Borrowings under the Senior Credit Agreement are secured by the trade receivables, inventory, personal property, equipment, and certain real property of the Company’s significant domestic subsidiaries. Interest rates on the revolving credit facility are based on the LIBOR plus an additional margin that ranges from 1.25% to 2.25% for LIBOR loans based on the Total Leverage Ratio.

In addition, the revolving credit facility is subject to an undrawn commitment fee ranging between 0.20% and 0.30% based on the Total Leverage Ratio and the daily average undrawn balance.

Standby letters of credit of $11,216,000 have been issued under the Senior Credit Agreement on behalf of the Company as of September 30, 2017. These letters of credit reduce the amount otherwise available under the revolving credit facility. As of September 30, 2017, the Company had $288,784,000 of availability under the revolving credit facility. No borrowings were outstanding under the revolving credit facility at September 30, 2017 and December 31, 2016.

On January 31, 2013, the Company issued $210 million of 6.25% Senior Subordinated Notes (6.25% Notes) due February 1, 2021.The provisions of the 6.25% Notes include, without limitation, restrictions on indebtedness, liens, and distributions from restricted subsidiaries, asset sales, affiliate transactions, dividends, and other restricted payments. Dividend payments are subject to annual limits and interest is paid semiannually on February 1 and August 1 of each year.

8. RELATED PARTYTRANSACTIONS

An officer of one of the Company's operating segments is the owner of certain real estate properties leased for manufacturing and distribution purposes by that operating segment. The leases are in effect until June 2018 and June 2020. For the three and nine months ended September 30, 2017 and 2016, the Company incurred the following lease expense for these properties (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017		2016
Cost of sales	$	262	$	227	$	787	$	679

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9. ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME

The cumulative balance of each component of accumulated other comprehensive loss, net of tax, is as follows (in thousands):

	Foreign Currency Translation Adjustment			Minimum Pension Liability Adjustment			Unamortized Post Retirement Health Care Costs			Total Pre-Tax Amount			Tax (Benefit) Expense			Accumulated  Other Comprehensive (Loss) Income
Balance at December 31, 2016	$	(5,848	)	$	197		$	(3,150	)	$	(8,801	)	$	(1,080	)	$	(7,721	)
Minimum pension and post retirement health care plan adjustments	—			(13		)	142			129			49			80
Foreign currency translation adjustment	3,351			—			—			3,351			—			3,351
Balance at September 30, 2017	$	(2,497	)	$	184		$	(3,008	)	$	(5,321	)	$	(1,031	)	$	(4,290	)

The realized adjustments relating to the Company’s minimum pension liability and post retirement health care costs were reclassified from accumulated other comprehensive loss and included in other expense in the consolidated statements of operations.

10. EQUITY-BASED COMPENSATION

On May 6, 2016, the shareholders of the Company authorized the Gibraltar Industries, Inc. 2016 Stock Plan for Non-Employee Directors ("Non-Employee Directors Plan"). The Non-Employee Directors Plan is a compensation plan that allows the Company to grant awards of shares of the Company's common stock to non-employee Directors of the Company. In connection with the Non-Employee Directors Plan, the Company adopted a new stock deferral plan, the Gibraltar Industries, Inc. Non-Employee Director Stock Deferral Plan ("Deferral Plan"). The Deferral Plan permits non-employee Directors of the Company to defer receipt of shares of common stock which the non-employee Director is entitled to receive pursuant to the terms of the Non-Employee Directors Plan.

On May 7, 2015, the shareholders of the Company authorized the Gibraltar Industries, Inc. 2015 Equity Incentive Plan (the "Plan") and simultaneously amended the 2005 Equity Incentive Plan (the "Prior Plan") to terminate issuance of further awards from the Prior Plan. The Plan is an incentive compensation plan that allows the Company to grant equity-based incentive compensation awards to eligible participants. Awards under the Plan may be in the form of options, restricted shares, restricted units, performance shares, performance stock units, and rights.

Equity Based Awards - Settled in Stock

The following table provides the number of stock unit awards granted during the nine months ended September 30, which will convert to shares upon vesting, along with the weighted average grant date fair values:

	2017			2016
Awards	Number of Awards	Weighted Average Grant Date Fair Value		Number of Awards	Weighted Average Grant Date Fair Value
Performance stock units	108,748	$	42.72	—	$	—
Restricted stock units	120,048	$	37.14	139,982	$	25.15
Options	25,000	$	42.35	—	$	—
Deferred stock units	10,170	$	34.42	11,945	$	29.30
Restricted shares	2,034	$	34.42	3,185	$	29.30

Included in the performance stock units disclosed above are 78,482 units awarded in February 2017 and 5,266 units award in April 2017 for which the final number of units that will convert to shares will be determined based on the Company’s actual return on invested capital (ROIC) relative to the ROIC targeted for the performance period ended December 31, 2017. Additionally, included in the performance stock units disclosed above, there were 20,000 units awarded in February 2017 and 5,000 units award in April 2017. For these awards, the final number of shares to be issued to the recipient will be determined based upon the ranking of the Company’s total shareholder return over a three (3) year performance period ended February 1, 2020 compared to the total shareholder return of companies in the S&P Small Cap Industrial Sector over such period.

15

Performance Stock Units - Settled in Cash

The Company awarded performance stock units ("PSUs") that will convert to cash after three years based upon a one year performance period in 2016 and 2015. The cost of these awards is recognized over the requisite vesting period. The PSUs earned over the performance period are determined based on the Company’s actual return on invested capital (ROIC) relative to the ROIC targeted for the performance period.

During the 2016 performance period, the participants earned an aggregate of 256,000 PSUs, representing 200% of the targeted

2016 award of 128,000. This award will convert to cash payable in January 2019.

During the 2015 performance period, the participants earned an aggregate of 438,000 PSUs, representing 200% of the targeted 2015 award of 219,000. This award will convert to cash payable in January 2018.

The following table summarizes the compensation expense recognized for the PSUs, which will convert to cash, for the three and nine months ended September 30, (in thousands):

	Three Months Ended  September 30,					Nine Months Ended  September 30,
	2017			2016		2017		2016
PSUs compensation (recovery) expense	$	(405	)	$	4,148	$	1,673	$	7,889

Management Stock Purchase Plan

The Management Stock Purchase Plan ("MSPP") provides participants the ability to defer a portion of their compensation, which deferral is converted to restricted stock units, and credited to an account. Under the MSPP, the Company provides a matching award in restricted stock units equal to a percentage of the employees' compensation. Matching awards are not provided to directors. The account represents a share-based liability converted to and settled in cash which is payable to participants upon retirement or a termination of their service to the Company.

The following table provides the number of restricted stock units credited to active participant accounts and the payments made with respect to restricted stock units issued under the MSPP during the nine months ended September 30,

	2017		2016
Restricted stock units credited	90,754		192,380
Share-based liabilities paid (in $1000s)	$	2,392	$	2,753

11. FAIR VALUE MEASUREMENTS

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, various techniques and assumptions can be used to estimate fair value. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement as follows:

• Level 1 - Quoted prices in active markets for identical assets or liabilities.

• Level 2 - Observable inputs other than quoted prices in active markets for similar assets and liabilities.

• Level 3 - Inputs that are unobservable inputs for the asset or liability.

The Company had no financial assets or liabilities measured at fair value on a recurring basis at September 30, 2017 and December 31, 2016. The Company’s only financial instrument for which the carrying value differs from its fair value is long-term debt. At September 30, 2017 and December 31, 2016, the fair value of outstanding debt net of unamortized debt issuance costs was $218,700,000 and $219,898,000, respectively, compared to its carrying value of $209,825,000 and $209,637,000, respectively.  The fair value of the Company’s 6.25% Notes is classified as Level 2 within the fair value hierarchy and was estimated based on quoted market prices adjusted for unamortized debt issuance costs. 

12. DISCONTINUED OPERATIONS

For certain divestiture transactions completed in prior years, the Company has agreed to indemnify the buyer for various liabilities that may arise after the disposal date, subject to limits of time and amount. The Company is a party to certain claims made under these indemnification provisions. As of September 30, 2017, the Company has a contingent liability recorded for such provisions related to discontinued operations. Management does not believe that the outcome of this claim, or other claims, would significantly affect the Company's financial condition or results of operation.

13. EXIT ACTIVITY COSTS AND ASSET IMPAIRMENTS

16

The Company is in the third year of its five year planned transformation strategy formulated to transform its operations and improve its financial results over this five year period. This strategy includes an 80/20 simplification initiative which, in part, focuses the Company’s internal resources on further increasing the value provided to our customers. A result of this initiative was the identification of low-volume, low margin, internally-produced products which have been or will be outsourced or discontinued. Portfolio management, another key part of the strategy and a natural adjunct to the 80/20 initiative, is another initiative in which management conducts strategic reviews of our current portfolio for future profitable growth and greater shareholder returns. This initiative has resulted in the sale and exiting of less profitable businesses or products lines in order to enable the Company to re-allocate leadership, time, capital and resources to the highest potential platforms and businesses. Exit activity costs and asset impairment charges were incurred as a result of these initiatives.

Exit activity costs were incurred during the nine months ended September 30, 2017 which related to contract termination costs, severance costs, and other moving and closing costs. These costs were the result of the closing and consolidation of facilities, relocation of inventory and equipment at those facilities and the reduction of workforce associated with the discontinued products and closed facilities. During the nine months ended September 30, 2017, asset impairment charges incurred were more than offset by a gain on sale of assets previously impaired in 2016 as a result of businesses and product lines discontinued. Specifically, the exit of both the Company's small European residential solar racking business and the exit of the Company's U.S. bar grating product line, which commenced during the fourth quarter of 2016, transacted sales of assets during the nine months ended September 30, 2017 which resulted in a net gain. These exits were completed in the first half of 2017. During the nine months ended September 30, 2017, asset impairment charges were incurred related to the write-down of inventory, impairment of machinery and equipment and intangible assets associated with either discontinued product lines or the reduction of manufactured goods offered within a product line. These assets were written down to their sale or scrap value, and were subsequently sold or disposed of. During the nine months ended September 30, 2017, the Company closed three facilities as a result of this strategy.

During the nine months ended September 30, 2016, the Company incurred asset impairment charges and exit activity costs resulting from the above strategy as well. As a result of these initiatives, the Company sold its European industrial manufacturing business to a third party in April 2016, as well as closed four other facilities during the first nine months of 2016.

The following tables set forth the asset impairment charges and exit activity costs incurred by segment during the three and nine months ended September 30, related to the restructuring activities described above (in thousands):

	Three Months Ended   September 30,
	2017							2016
	Inventory write-downs &/or asset impairment recoveries, net		Exit activity costs			Total		Inventory write-downs &/or asset impairment charges		Exit activity costs		Total
Residential Products	$	442	$	566		$	1,008	$	373	$	207	$	580
Industrial & Infrastructure Products	98		(12		)	86		2,429		756		3,185
Renewable Energy & Conservation	266		191			457		—		—		—
Corporate	—		16			16		—		—		—
Total exit activity costs & asset impairments	$	806	$	761		$	1,567	$	2,802	$	963	$	3,765

	Nine Months Ended   September 30,
	2017							2016
	Inventory write-downs &/or asset impairment recoveries, net			Exit activity costs		Total		Inventory write-downs &/or asset impairment charges		Exit activity costs		Total
Residential Products	$	295		$	958	$	1,253	$	1,179	$	677	$	1,856
Industrial & Infrastructure Products	(2,492		)	2,959		467		2,697		2,019		4,716
Renewable Energy & Conservation	266			2,610		2,876		—		—		—
Corporate	—			179		179		—		—		—
Total exit activity costs & asset impairments	$	(1,931	)	$	6,706	$	4,775	$	3,876	$	2,696	$	6,572

17

The following table provides a summary of where the asset impairments and exit activity costs were recorded in the statement of operations for the three and nine months ended September 30, (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017		2016
Cost of sales	$	860	$	3,433	$	382	$	5,111
Selling, general, and administrative expense	707		332		4,393		1,461
Net asset impairment and exit activity charges	$	1,567	$	3,765	$	4,775	$	6,572

The following table reconciles the beginning and ending liability for exit activity costs relating to the Company’s facility consolidation efforts (in thousands):

	2017			2016
Balance at January 1	$	3,744		$	603
Exit activity costs recognized	6,706			2,696
Cash payments	(9,207		)	(2,182		)
Balance at September 30	$	1,243		$	1,117

As noted above, the Company sold its European industrial manufacturing business to a third party on April 15, 2016 from its Industrial and Infrastructure Products segment. This divestiture did not meet the criteria to be reported as a discontinued operation as it does not represent a strategic shift that has or will have a major effect on the Company’s operations. Similarly, neither the exiting of the Company’s small European residential solar racking business nor its U.S. bar grating product line met the criteria to be reported as a discontinued operation for the year ended December 31, 2016. Therefore, prior period results of continuing operations have not been restated to exclude the impact of the divested and existed businesses' financial results. The pretax loss on sale of the European industrial manufacturing business is presented within other expense (income) in the consolidated statement of operations. The costs related to the exit of the Company's small European residential solar racking business and its U.S. bar grating product line are reflected in the above tables.

14. INCOME TAXES

The following table summarizes the provision for income taxes for continuing operations (in thousands) for the three and nine months ended September 30, and the applicable effective tax rates:

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2017			2016			2017			2016
Provision for income taxes	$	11,184		$	8,952		$	21,090		$	12,131
Effective tax rate	35.2		%	39.4		%	35.8		%	22.7		%

The effective tax rate for the three months and nine months ended September 30, 2017 was greater than the U.S. federal statutory rate of 35% due to state taxes and $2.2 million of pretax losses generated by the European residential solar racking business for which no tax benefit has been recorded, as such benefit is not expected to be realizable, partially offset by net deductible permanent differences and favorable discrete items. The effective tax rate for the third quarter of 2016 exceeded the U.S. federal statutory rate of 35% due to state taxes and unfavorable discrete items. The effective tax rate for the nine months ended September 30, 2016 was less than the U.S. federal statutory rate of 35% due to deductible permanent differences and favorable discrete items partially offset by state taxes.

The Company recorded a discrete tax benefit of $11.4 million during the nine months ended September 30, 2016 due to the effect of a worthless stock deduction and an associated bad debt deduction of inter-company debt resulting from the sale of its European industrial manufacturing business to a third party. The amount of this benefit was subsequently adjusted and reduced by $4.8 million in the fourth quarter of 2016.

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15. EARNINGS PER SHARE

Basic earnings and diluted weighted-average shares outstanding are as follows for the three and nine months ended September 30, (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017			2016
Numerator:
Income from continuing operations	$	20,619	$	13,786	$	37,789		$	41,427
Loss from discontinued operations	—		—		(405		)	—
Net income available to common shareholders	$	20,619	$	13,786	$	37,384		$	41,427
Denominator for basic earnings per share:
Weighted average shares outstanding	31,703		31,579		31,700			31,493
Denominator for diluted earnings per share:
Weighted average shares outstanding	31,703		31,579		31,700			31,493
Common stock options and restricted stock	507		597		516			512
Weighted average shares and conversions	32,210		32,176		32,216			32,005

The weighted average number of diluted shares does not include potential anti-dilutive common shares aggregating 489,000 and 621,000 for the three months ended September 30, 2017 and 2016, respectively, and 523,000 and 690,000 for the nine months ended September 30, 2017 and 2016, respectively .

16. SEGMENT INFORMATION

The Company is organized into three reportable segments on the basis of the production process and products and services provided by each segment, identified as follows:

(i) Residential Products, which primarily includes roof and foundation ventilation products, mail and parcel storage products, rain dispersion products and roofing accessories;

(ii) Industrial and Infrastructure Products, which primarily includes expanded and perforated metal, expansion joints and structural bearings; and

(iii) Renewable Energy and Conservation, which primarily includes designing, engineering, manufacturing and installation of solar racking systems and greenhouse structures.

When determining the reportable segments, the Company aggregated operating segments based on their similar economic and operating characteristics.

19

The following table illustrates certain measurements used by management to assess performance of the segments described above for the three and nine months ended September 30, (in thousands):

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2017			2016			2017			2016
Net sales:
Residential Products	$	129,501		$	117,957		$	361,304		$	338,069
Renewable Energy and Conservation	88,135			82,008			202,690			204,648
Industrial and Infrastructure Products	57,162			73,193			165,806			234,590
Less: Intersegment sales	(224		)	(424		)	(994		)	(1,164		)
Net Industrial and Infrastructure Products	56,938			72,769			164,812			233,426
Total consolidated net sales	$	274,574		$	272,734		$	728,806		$	776,143
Income from operations:
Residential Products	$	23,764		$	19,407		$	61,984		$	52,363
Renewable Energy and Conservation	11,549			16,366			18,381			34,969
Industrial and Infrastructure Products	2,554			1,913			5,914			11,429
Unallocated Corporate Expenses	(2,174		)	(11,164		)	(15,977		)	(25,902		)
Total income from operations	$	35,693		$	26,522		$	70,302		$	72,859

17. SUPPLEMENTAL FINANCIAL INFORMATION

The following information sets forth the consolidating summary financial statements of the issuer (Gibraltar Industries, Inc.) and guarantors, which guarantee the 6.25% Notes due February 1, 2021, and the non-guarantors. The guarantors are 100% owned domestic subsidiaries of the issuer and the guarantees are full, unconditional, joint and several.

Investments in subsidiaries are accounted for by the parent using the equity method of accounting. The guarantor subsidiaries and non-guarantor subsidiaries are presented on a combined basis. The principal elimination entries eliminate investments in subsidiaries and intercompany balances and transactions.

20

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF OPERATIONS

THREE MONTHS ENDED SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Total
Net sales	$	—		$	264,448	$	15,514		$	(5,388	)	$	274,574
Cost of sales	—			198,103		12,844			(5,108		)	205,839
Gross profit	—			66,345		2,670			(280		)	68,735
Selling, general, and administrative expense	34			31,003		2,005			—			33,042
(Loss) income from operations	(34		)	35,342		665			(280		)	35,693
Interest expense (income)	3,402			105		(21		)	—			3,486
Other expense	—			100		304			—			404
(Loss) income before taxes	(3,436		)	35,137		382			(280		)	31,803
(Benefit of) provision for income taxes	(1,124		)	12,219		89			—			11,184
Equity in earnings from subsidiaries	23,211			293		—			(23,504		)	—
Net income	$	20,899		$	23,211	$	293		$	(23,784	)	$	20,619

21

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF OPERATIONS

THREE MONTHS ENDED SEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Total
Net sales	$	—		$	265,657	$	15,799		$	(8,722	)	$	272,734
Cost of sales	—			202,199		11,721			(9,073		)	204,847
Gross profit	—			63,458		4,078			351			67,887
Selling, general, and administrative expense	94			38,505		2,766			—			41,365
(Loss) income from operations	(94		)	24,953		1,312			351			26,522
Interest expense (income)	3,403			241		(19		)	—			3,625
Other expense (income)	230			24		(95		)	—			159
(Loss) income before taxes	(3,727		)	24,688		1,426			351			22,738
(Benefit of) provision for income taxes	(1,416		)	10,804		(436		)	—			8,952
Equity in earnings from subsidiaries	15,746			1,862		—			(17,608		)	—
Net income	$	13,435		$	15,746	$	1,862		$	(17,257	)	$	13,786

22

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF OPERATIONS

NINE MONTHS ENDED SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
Net sales	$	—		$	700,848		$	37,383		$	(9,425	)	$	728,806
Cost of sales	—			527,389			30,565			(8,963		)	548,991
Gross profit	—			173,459			6,818			(462		)	179,815
Selling, general, and administrative expense	111			101,190			8,212			—			109,513
(Loss) income from operations	(111		)	72,269			(1,394		)	(462		)	70,302
Interest expense (income)	10,207			459			(54		)	—			10,612
Other expense	—			345			466			—			811
(Loss) income before taxes	(10,318		)	71,465			(1,806		)	(462		)	58,879
(Benefit of) provision for income taxes	(3,808		)	24,957			(59		)	—			21,090
(Loss) income from continuing operations	(6,510		)	46,508			(1,747		)	(462		)	37,789
Discontinued operations:
Loss from discontinued operations before taxes	—			(644		)	—			—			(644		)
Benefit of income taxes	—			(239		)	—			—			(239		)
Loss from discontinued operations	—			(405		)	—			—			(405		)
Equity in earnings (loss) from subsidiaries	44,356			(1,747		)	—			(42,609		)	—
Net income (loss)	$	37,846		$	44,356		$	(1,747	)	$	(43,071	)	$	37,384

23

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF OPERATIONS

NINE MONTHS ENDED SEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Total
Net sales	$	—		$	728,782	$	63,014		$	(15,653	)	$	776,143
Cost of sales	—			551,195		49,436			(15,368		)	585,263
Gross profit	—			177,587		13,578			(285		)	190,880
Selling, general, and administrative expense	14,268			99,622		4,131			—			118,021
(Loss) income from operations	(14,268		)	77,965		9,447			(285		)	72,859
Interest expense (income)	10,207			836		(61		)	—			10,982
Other expense (income)	8,717			465		(863		)	—			8,319
(Loss) income before taxes	(33,192		)	76,664		10,371			(285		)	53,558
(Benefit of) provision for income taxes	(10,898		)	22,189		840			—			12,131
Equity in earnings from subsidiaries	64,006			9,531		—			(73,537		)	—
Net income	$	41,712		$	64,006	$	9,531		$	(73,822	)	$	41,427

24

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

THREE MONTHS ENDED SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.		Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Eliminations			Total
Net income	$	20,899	$	23,211		$	293	$	(23,784	)	$	20,619
Other comprehensive income (loss):
Foreign currency translation adjustment	—		—			1,581		—			1,581
Adjustment to retirement benefit liability, net of tax	—		(2		)	—		—			(2		)
Adjustment to post employment health care benefit liability, net of tax	—		29			—		—			29
Other comprehensive income	—		27			1,581		—			1,608
Total comprehensive income	$	20,899	$	23,238		$	1,874	$	(23,784	)	$	22,227

25

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

THREE MONTHS ENDED SEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.		Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Total
Net income	$	13,435	$	15,746	$	1,862		$	(17,257	)	$	13,786
Other comprehensive income (loss):
Foreign currency translation adjustment	—		—		(193		)	—			(193		)
Adjustment to retirement benefit liability, net of tax	—		61		—			—			61
Adjustment to post employment health care benefit liability, net of tax	—		38		—			—			38
Other comprehensive income (loss)	—		99		(193		)	—			(94		)
Total comprehensive income	$	13,435	$	15,845	$	1,669		$	(17,257	)	$	13,692

26

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

NINE MONTHS ENDED SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
Net income (loss)	$	37,846	$	44,356		$	(1,747	)	$	(43,071	)	$	37,384
Other comprehensive income (loss):
Foreign currency translation adjustment	—		—			3,351			—			3,351
Adjustment to retirement benefit liability, net of tax	—		(8		)	—			—			(8		)
Adjustment to post employment health care benefit liability, net of tax	—		88			—			—			88
Other comprehensive income	—		80			3,351			—			3,431
Total comprehensive income	$	37,846	$	44,436		$	1,604		$	(43,071	)	$	40,815

27

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

NINE MONTHS ENDED SEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Total
Net income	$	41,712	$	64,006	$	9,531	$	(73,822	)	$	41,427
Other comprehensive income:
Foreign currency translation adjustment	—		—		10,638		—			10,638
Adjustment to retirement benefit liability, net of tax	—		59		—		—			59
Adjustment to post employment health care benefit liability, net of tax	—		114		—		—			114
Other comprehensive income	—		173		10,638		—			10,811
Total comprehensive income	$	41,712	$	64,179	$	20,169	$	(73,822	)	$	52,238

28

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING BALANCE SHEETS

SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	—		$	182,827		$	25,205		$	—		$	208,032
Accounts receivable, net	—			158,877			7,841			—			166,718
Intercompany balances	(18,097		)	21,351			(3,254		)	—			—
Inventories	—			80,771			4,385			—			85,156
Other current assets	4,036			(32		)	4,191			—			8,195
Total current assets	(14,061		)	443,794			38,368			—			468,101
Property, plant, and equipment, net	—			90,933			3,555			—			94,488
Goodwill	—			298,331			22,762			—			321,093
Acquired intangibles	—			99,060			8,883			—			107,943
Other assets	—			4,672			—			—			4,672
Investment in subsidiaries	730,080			60,844			—			(790,924		)	—
	$	716,019		$	997,634		$	73,568		$	(790,924	)	$	996,297
Liabilities and Shareholders’ Equity
Current liabilities:
Accounts payable	$	—		$	91,499		$	4,682		$	—		$	96,181
Accrued expenses	2,188			79,332			1,744			—			83,264
Billings in excess of cost	—			14,578			3,656						18,234
Current maturities of long-term debt	—			400			—			—			400
Total current liabilities	2,188			185,809			10,082			—			198,079
Long-term debt	208,400			1,025			—			—			209,425
Deferred income taxes	—			35,520			2,642			—			38,162
Other non-current liabilities	—			45,200			—			—			45,200
Shareholders’ equity	505,431			730,080			60,844			(790,924		)	505,431
	$	716,019		$	997,634		$	73,568		$	(790,924	)	$	996,297

29

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING BALANCE SHEETS

DECEMBER 31, 2016

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	—		$	143,826		$	26,351		$	—		$	170,177
Accounts receivable, net	—			117,526			6,546			—			124,072
Intercompany balances	(615		)	6,152			(5,537		)	—			—
Inventories	—			85,483			4,129			—			89,612
Other current assets	13,783			(10,070		)	3,623			—			7,336
Total current assets	13,168			342,917			35,112			—			391,197
Property, plant, and equipment, net	—			104,642			3,662			—			108,304
Goodwill	—			282,300			21,732			—			304,032
Acquired intangibles	—			101,520			9,270			—			110,790
Other assets	—			3,922			—			—			3,922
Investment in subsidiaries	663,118			58,477			—			(721,595		)	—
	$	676,286		$	893,778		$	69,776		$	(721,595	)	$	918,245
Liabilities and Shareholders’ Equity
Current liabilities:
Accounts payable	$	—		$	66,363		$	3,581		$	—		$	69,944
Accrued expenses	7,369			60,004			3,019			—			70,392
Billings in excess of cost	—			9,301			2,051			—			11,352
Current maturities of long-term debt	—			400			—			—			400
Total current liabilities	7,369			136,068			8,651			—			152,088
Long-term debt	208,037			1,200			—			—			209,237
Deferred income taxes	—			35,354			2,648			—			38,002
Other non-current liabilities	—			58,038			—			—			58,038
Shareholders’ equity	460,880			663,118			58,477			(721,595		)	460,880
	$	676,286		$	893,778		$	69,776		$	(721,595	)	$	918,245

30

GIBRALTAR INDUSTRIES, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

NINE MONTHS ENDEDSEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations		Total
Cash Flows from Operating Activities
Net cash (used in) provided by operating activities	$	(15,136	)	$	64,702		$	(735	)	$	—	$	48,831
Cash Flows from Investing Activities
Cash paid for acquisitions	—			(18,494		)	—			—		(18,494		)
Net proceeds from sale of property and equipment	—			12,935			—			—		12,935
Purchases of property, plant, and equipment	—			(4,929		)	(223		)	—		(5,152		)
Net cash used in investing activities	—			(10,488		)	(223		)	—		(10,711		)
Cash Flows from Financing Activities
Long-term debt payments	—			(400		)	—			—		(400		)
Purchase of treasury stock at market prices	(1,982		)	—			—			—		(1,982		)
Net proceeds from issuance of common stock	649			—			—			—		649
Intercompany financing	16,469			(14,813		)	(1,656		)	—		—
Net cash provided by (used in) financing activities	15,136			(15,213		)	(1,656		)	—		(1,733		)
Effect of exchange rate changes on cash	—			—			1,468			—		1,468
Net increase (decrease) in cash and cash equivalents	—			39,001			(1,146		)	—		37,855
Cash and cash equivalents at beginning of year	—			143,826			26,351			—		170,177
Cash and cash equivalents at end of period	$	—		$	182,827		$	25,205		$	—	$	208,032

31

GIBRALTAR INDUSTRIES, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

NINE MONTHS ENDEDSEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations		Total
Cash Flows from Operating Activities
Net cash (used in) provided by operating activities	$	(34,186	)	$	119,790		$	16,582		$	—	$	102,186
Cash Flows from Investing Activities
Cash paid for acquisitions	—			(2,314		)	—			—		(2,314		)
Net proceeds from sale of property and equipment	—			220			29			—		249
Purchases of property, plant, and equipment	—			(7,177		)	(423		)	—		(7,600		)
Net proceeds from sale of business	—			—			8,250			—		8,250
Other, net	—			1,118			—			—		1,118
Net cash (used in) provided by investing activities	—			(8,153		)	7,856			—		(297		)
Cash Flows from Financing Activities
Long-term debt payments	—			(400		)	—			—		(400		)
Payment of debt issuance costs	—			(54		)	—			—		(54		)
Purchase of treasury stock at market prices	(1,178		)	—			—			—		(1,178		)
Net proceeds from issuance of common stock	2,892			—			—			—		2,892
Intercompany financing	32,472			(996		)	(31,476		)	—		—
Net cash provided by (used in) financing activities	34,186			(1,450		)	(31,476		)	—		1,260
Effect of exchange rate changes on cash	—			—			1,055			—		1,055
Net increase (decrease) in cash and cash equivalents	—			110,187			(5,983		)	—		104,204
Cash and cash equivalents at beginning of year	—			39,597			29,261			—		68,858
Cash and cash equivalents at end of period	$	—		$	149,784		$	23,278		$	—	$	173,062

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Certain information set forth herein includes statements that express our opinions, expectations, beliefs, plans, objectives, assumptions or projections regarding future events or future results and, therefore, are or may be deemed to be, “forward-looking statements.” These forward-looking statements can generally be identified by the use of forward-looking terminology, including the terms “believes,” “anticipates,” “expects,” “estimates,” “seeks,” “projects,” “intends,” “plans,” “may,” “will” or “should” or, in each case, their negative or other variations or comparable terminology. These forward-looking statements include all matters that are not historical facts. They include statements regarding our intentions, beliefs or current expectations concerning, among other things, our results of operations, financial condition, liquidity, prospects, growth, competition, strategies and the industries in which we operate. By their nature, forward-looking statements involve risks and uncertainties because they relate to events and depend on circumstances that may or may not occur in the future. We believe that these risks and uncertainties include, but are not limited to, those described in the “Risk Factors” disclosed in our Annual Report on Form 10-K. Although we base these forward-looking statements on assumptions that we believe are reasonable when made, we caution you that forward-looking statements are not guarantees of future performance and that our actual results of operations, financial condition and liquidity and the development of the industries in which we operate may differ materially from those made in or suggested by the forward-looking statements contained herein. In addition, even if our results of operations, financial condition and liquidity and the development of the industries in which we operate are consistent with the forward-looking statements contained in this quarterly report, those results or developments may not be indicative of results or developments in subsequent periods. Given these risks and uncertainties, you are cautioned not to place undue reliance on these forward-looking statements. Any forward-looking statements that we make herein speak only as of the date of those statements, and we undertake no obligation to update those statements or to publicly announce the results of any revisions to any of those statements to reflect future events or developments. Comparisons of results for current and any prior periods are not intended to express any future trends or indications of future performance, unless expressed as such, and should only be viewed as historical data.

Overview

Gibraltar Industries, Inc. (the "Company") is a leading manufacturer and distributor of building products for the industrial, transportation infrastructure, residential housing, renewable energy and resource conservation markets. Our business strategy is designed to significantly elevate and accelerate the growth and financial returns of the Company. We believe this can be achieved, in part, from a transformational change in the Company’s portfolio, as well as, the implementation of the strategy described below. Our business strategy has four key elements, or "pillars," which are: operational excellence, product innovation, portfolio management, and acquisitions as a strategic accelerator. We strive to deliver best-in-class, sustainable value creation for our shareholders for the long-term.

Operational excellence is our first pillar in this strategy. 80/20 simplification ("80/20") is a core part of the operational excellence pillar and is based on the analysis that 25% of the customers typically generate 89% of the revenue in a business, and 150% of the profitability. Through analysis of data generated by our 80/20 practices, we are focusing on our largest and best opportunities (the “80”) and eliminating complexity associated with less profitable opportunities (the “20”) in order to generate more earnings year over year, at a higher rate of return with a more efficient use of capital.

We are in the third year of our multi-year simplification initiative. Since initiation of 80/20 in 2015, we have exceeded our initial five-year target ending 2019 of $25 million of pre-tax savings. We are currently in the middle of this 80/20 initiative, which means that there is both more work and more opportunity ahead. We are targeting greater structural changes affecting our balance sheet. We are starting the follow-on management tools of in-lining our manufacturing processes linked with market-rate-of-demand replenishment tools. These follow-on tools are focused on manufacturing the highest-volume products for our largest customers, and on a much higher level of capacity utilization. We expect these methods will yield additional benefits including lower manufacturing costs, lower inventories and fixed assets, and an even higher level of service to customers.

The second pillar of our strategy is portfolio management, which is a natural adjunct to the 80/20 initiative. Using the 80/20 process, we conduct strategic reviews of our customers and end markets, and allocate leadership time, capital and resources to the platforms and businesses with the highest revenue and margin potential. Following the sale of our European industrial manufacturing business to a third party in April 2016, we decided in December 2016 to exit our small European residential solar racking business and U.S. bar grating product line, both of which proceeded as planned. These portfolio changes have helped contribute to the Company's realization of a higher rate of return on invested capital in 2016. We have now acted on all near-term portfolio assessments and expect no additional changes in 2017 while we continue to position our resources on more attractive projects and markets.

33

Product innovation is our third strategic pillar. Innovation is centered on the allocation of new and existing resources to opportunities that we believe will produce sustainable returns. Our focus is on driving top line growth with new and innovative products. We are focused on those products and technologies that have relevance to the end-user and can be differentiated from our competition. Our initiatives will be tailored toward reallocating sales and marketing talent to target specific end user groups in order to better understand their needs and the various market opportunities that may be available. This effort is expected to produce ideas and opportunities that generate profitable growth. Our focus on innovation is centered on four markets: postal, parcel and storage solutions; residential air management; infrastructure; and renewable energy. These respective markets are expected to grow based on demand for: centralized mail and parcel delivery systems; zero carbon footprint homes; the need for repairs to elevated bridges that are structurally deficient or functionally obsolete; and energy sources not dependent on fossil fuels.

The fourth pillar of our strategy is acquisitions. We have targeted four key markets in which to make strategic acquisitions which are served by existing platforms within the Company. The existing platforms include the same areas in which we are targeting the development of innovative products: postal, parcel and storage solutions; infrastructure; residential air management; and renewable energy. These platforms are all in large markets in which the underlying trends for customer convenience and safety, energy-savings and resource conservation are of increasing importance to consumers and are expected to drive long-term demand. We believe these markets also offer the opportunity for higher returns on our investments than those we have generated in the past. The acquisitions of Rough Brothers Manufacturing, Inc., RBI Solar, Inc., and affiliates, collectively known as "RBI" in June 2015 and more recently, Nexus Corporation ("Nexus") in October 2016 and Package Concierge in February 2017, were the direct result of this strategy. We also consider businesses outside of these four markets, as we continually search out opportunities to grow our business in large markets with expected growth in demand for the foreseeable future, where we can add value through our manufacturing experience, 80/20 process and purchasing synergies.

On February 22, 2017, the Company acquired all of the outstanding stock of Package Concierge for approximately $19 million subject to a working capital adjustment and certain other adjustments provided for in the stock purchase agreement. The acquisition was financed through cash on hand. Package Concierge is a leading provider of multifamily electronic package delivery locker systems in the United States. The results of operations of Package Concierge have been included within the Residential Products segment of the Company's consolidated financial statements from the date of acquisition.

On February 6, 2017, the Company completed the sale of substantially all of its U.S. bar grating product line assets to a third party. The Company had previously announced, on December 2, 2016, its intentions to exit its U.S. bar grating product line and its European residential solar racking business as part of its portfolio management initiative. These businesses contributed a combined $75 million in revenue and pre-tax operating losses of $6 million in 2016.This action resulted in the sale and closing of 3 facilities in early 2017. These assets were a part of our Industrial and Infrastructure Products segment.

On October 11, 2016, the Company acquired all of the outstanding stock of Nexus for approximately $24 million. The acquisition was financed through cash on hand. Nexus is a leading provider of commercial-scale greenhouses to customers in the United States. The results of operations of Nexus have been included within the Renewable Energy and Conservation segment of the Company's consolidated financial statements from the date of acquisition.

On April 15, 2016, the Company sold its European industrial manufacturing business to a third party for net of cash proceeds of $8.3 million. This business, which supplied expanded metal products for filtration and other applications, contributed $36 million in revenue to the Company's Industrial and Infrastructure Products segment in 2015 and had nearly break-even operating results. The Company's divestiture of this business was the result of the Company's portfolio management assessments.

The Company serves customers primarily throughout North America and, to a lesser extent, Asia. Our customers include major home improvement retailers, wholesalers, industrial distributors, contractors, solar developers and institutional and commercial growers of plants. As of September 30, 2017, we operated 42 facilities in 17 states, Canada, China, and Japan, giving us a base of operations to provide customer support, delivery, service and quality to a number of regional and national customers and providing us with manufacturing and distribution efficiencies in North America, as well as a presence in the Asian markets.

The Company operates and reports its results in the following three reporting segments, entitled:

• Residential Products;

• Renewable Energy and Conservation; and

• Industrial and Infrastructure Products.

34

Our Residential Products segment services residential repair and remodeling activity and new residential housing construction with products including roof and foundation ventilation products, mail and parcel storage products, rain dispersion products and roof ventilation accessories. This segment's products are sold through major retail home centers, building material wholesalers, distributor groups, residential contractors and directly to the multi-family property management companies.

Our Renewable Energy and Conservation segment focuses on the design, engineering, manufacturing and installation of solar racking systems and commercial, institutional, and retail greenhouse structures. This segment's services and products are provided directly to developers, select distribution channels, and end users/owners.

Our Industrial and Infrastructure Products segment focuses on a variety of markets including industrial and commercial construction, highway and bridge construction, automotive, airports and energy and power generation markets with products including perimeter security, expanded and perforated metal, plank grating, as well as, expansion joints and structural bearings for roadways and bridges. This segment sells its products through steel fabricators and distributors, commercial and transportation contractors, and original equipment manufacturers.

The end markets our businesses serve include residential housing, industrial manufacturing, transportation infrastructure, and renewable energy and conservation. These end markets are subject to economic conditions that are influenced by various factors. These factors include but are not limited to changes in general economic conditions, interest rates, exchange rates, commodity costs, demand for residential construction, governmental policies and funding, tax policies and the volume of non-residential construction and infrastructure projects. We believe the key elements of our strategy will allow us to respond timely to changes in these factors. We have and expect to continue to restructure our operations, including consolidation of facilities, reducing overhead costs, curtailing investments in inventory, and managing our business to generate incremental cash. Additionally, we believe our strategy has enabled us to better react to fluctuations in commodity costs and customer demand, and has helped in improving margins. We have used the improved cash flows generated by these initiatives to improve our liquidity position, and invest in growth initiatives. Overall, we are striving to achieve stronger financial results, make more efficient use of capital, and deliver higher shareholder returns.

Results of Operations

Three Months Ended September 30, 2017 Compared to the Three Months Ended September 30, 2016

The following table sets forth selected data from our consolidated statements of operations and the related percentage of net sales for the three months ended September 30, (in thousands):

	2017				2016
Net sales	$	274,574	100.0	%	$	272,734	100.0	%
Cost of sales	205,839		75.0	%	204,847		75.1	%
Gross profit	68,735		25.0	%	67,887		24.9	%
Selling, general, and administrative expense	33,042		12.0	%	41,365		15.2	%
Income from operations	35,693		13.0	%	26,522		9.7	%
Interest expense	3,486		1.3	%	3,625		1.3	%
Other expense	404		0.1	%	159		0.1	%
Income before taxes	31,803		11.6	%	22,738		8.3	%
Provision for income taxes	11,184		4.1	%	8,952		3.2	%
Net income	$	20,619	7.5	%	$	13,786	5.1	%

The following table sets forth the Company’s net sales by reportable segment for the three months ended September 30, (in thousands):

35

										Change due to
	2017			2016			Total Change			Divestitures			Acquisitions		Operations
Net sales:
Residential Products	$	129,501		$	117,957		$	11,544		$	—		$	1,811	$	9,733
Renewable Energy and Conservation	88,135			82,008			6,127			(2,266		)	6,423		1,970
Industrial and Infrastructure Products	57,162			73,193			(16,031		)	(14,799		)	—		(1,232		)
Less: Intersegment sales	(224		)	(424		)	200			—			—		200
Net Industrial and Infrastructure Products	56,938			72,769			(15,831		)	(14,799		)	—		(1,032		)
Consolidated	$	274,574		$	272,734		$	1,840		$	(17,065	)	$	8,234	$	10,671

Consolidated net sales increased by $1.8 million, or 0.7%, to $274.6 million for the three months ended September 30, 2017 compared to the three months ended September 30, 2016. The increase in sales was the result of increased volumes in ongoing revenue streams along with contributions from our recent acquisitions in our Renewable Energy and Conservation and Residential Products Segments, Nexus in October 2016 and Package Concierge in February 2017, respectively. Also contributing to the increase was a modest 1.0% increase in pricing to customers. Partially offsetting these increases were the results of divestitures related to the Company’s portfolio management activities during 2016. This included the exit of both the Company's small European residential solar racking business and the Company's U.S. bar grating product line, both of which commenced during the fourth quarter of 2016. These divestitures resulted in a decrease in revenues of $17.1 million from the prior year quarter.

Net sales in our Residential Products segment increased9.7%, or $11.5 million to $129.5 million for the three months ended September 30, 2017 compared to $118.0 million for the three months ended September 30, 2016. The increase was largely the result of a net increase in volume along with sales generated from the acquisition of Package Concierge and an increase in pricing to customers. The volume increase resulted from demand for our commercial package solutions as well as our roofing-related ventilation and rain dispersion products.

Net sales in our Renewable Energy and Conservation segment increased7.4%, or $6.1 million to $88.1 million for the three months ended September 30, 2017 compared to $82.0 million for the three months ended September 30, 2016. The increase was the result of sales generated from the acquisition of Nexus and an increase in volume in our domestic markets. Partially offsetting this increase were the effects of the exit of the Company's small European residential solar racking business and continued softness in our international markets.

Net sales in our Industrial and Infrastructure Products segment decreased21.7%, or $15.8 million to $56.9 million for the three months ended September 30, 2017 compared to $72.8 million for the three months ended September 30, 2016. The decrease in net sales was primarily the result of the Company's exit from its U.S. bar grating product line. Also a decrease in demand for our infrastructure products as compared to the third quarter in the prior year, which include components for bridges and elevated highways, contributed to the decline in volume due to continued delay in infrastructure projects. We expect this decline to be temporary as backlog and bookings for this business have increased compared to the prior year quarter and the market shows signs of recovery.

Our consolidated gross margin slightly increased to 25.0% for the three months ended September 30, 2017 compared to 24.9% for the three months ended September 30, 2016. This increase was largely the result of portfolio management actions during 2016 in which less profitable businesses or product lines were sold or exited in order to enable the Company to re-allocate leadership, time, capital and resources to the highest potential platforms and businesses. This increase was largely offset by a less favorable alignment of material costs to customer selling prices.

Selling, general, and administrative (SG&A) expenses decreased by $8.3 million, or 20.1%, to $33.0 million for the three months ended September 30, 2017 from $41.4 million for the three months ended September 30, 2016. The $8.3 million decrease was primarily due to $7.6 million of lower performance-based compensation expenses, along with a $2.2 million decrease in senior leadership transition costs. These were partially offset by $2.3 million of additional expense from the acquisitions of Nexus and Package Concierge. SG&A expenses as a percentage of net sales decreased to 12.0% for the three months ended September 30, 2017 compared to 15.2% for the three months ended September 30, 2016.

36

The following table sets forth the Company’s income from operations and income from operations as a percentage of net sales by reportable segment for the three months ended September 30, (in thousands):

	2017					2016					Total Change
Income (loss) from operations:
Residential Products	$	23,764		18.4	%	$	19,407		16.5	%	$	4,357
Renewable Energy and Conservation	11,549			13.1	%	16,366			20.0	%	(4,817		)
Industrial and Infrastructure Products	2,554			4.5	%	1,913			2.6	%	641
Unallocated Corporate Expenses	(2,174		)	(0.8	)%	(11,164		)	(4.1	)%	8,990
Consolidated income from operations	$	35,693		13.0	%	$	26,522		9.7	%	$	9,171

Our Residential Products segment generated an operating margin of 18.4% during the three months ended September 30, 2017 compared to 16.5% during the three months ended September 30, 2016. The increase of $4.4 million of operating profit is due to the benefits of improved operational efficiencies and contributions from the 80/20 initiative.

The Renewable Energy and Conservation segment generated an operating margin of 13.1% in the current year quarter compared to 20.0% in the prior year quarter. The decline in operating margin reflects an unfavorable alignment of material costs to customer selling prices as compared to the prior year quarter.

Our Industrial and Infrastructure Products segment generated an operating margin of 4.5% during the three months ended September 30, 2017 compared to 2.6% during the three months ended September 30, 2016. The improvement was largely the result of costs incurred in the prior-year quarter related to our 80/20 simplification initiatives. Partially offsetting this improvement were the effects of lower volumes from our infrastructure products and an unfavorable alignment of material costs to customer selling prices.

Unallocated corporate expenses decreased $9.0 million from $11.2 million during the three months ended September 30, 2016 to $2.2 million during the three months ended September 30, 2017. This decrease from the prior year quarter was largely due to a $7.4 million decrease in performance-based compensation expenses, along with a $2.2 million decrease in senior leadership transition costs.

The Company recorded other expense of $0.4 million for the three months ended September 30, 2017 and other expense of $0.2 million for the three months ended September 30, 2016. The increase from the prior year quarter was primarily due to foreign currency fluctuations.

Interest expense modestly decreased by $0.1 million to $3.5 million for the three months ended September 30, 2017 compared to $3.6 million for the three months ended September 30, 2016. During the three months ended September 30, 2017 and 2016, no amounts were outstanding under our revolving credit facility.

We recognized a provision for income taxes of $11.2 million and $9.0 million, with effective tax rates of 35.2% and 39.4% for the three months ended September 30, 2017, and 2016, respectively. The effective tax rate for the third quarter of 2017 exceeded the U.S. federal statutory rate of 35% due to state taxes and $2.2 million of pretax losses generated by the European residential solar racking business for which no tax benefit has been recorded as such benefit is not expected to be realizable, partially offset by net deductible permanent differences and favorable discrete items. The effective tax rate for the third quarter of 2016 was greater than the U.S. federal statutory rate of 35% primarily due state taxes and unfavorable discrete items.

Nine Months Ended September 30, 2017 Compared to the Nine Months Ended September 30, 2016

The following table sets forth selected data from our consolidated statements of operations and the related percentage of net sales for the nine months ended September 30, (in thousands):

37

	2017					2016
Net sales	$	728,806		100.0	%	$	776,143	100.0	%
Cost of sales	548,991			75.3	%	585,263		75.4	%
Gross profit	179,815			24.7	%	190,880		24.6	%
Selling, general, and administrative expense	109,513			15.0	%	118,021		15.2	%
Income from operations	70,302			9.7	%	72,859		9.4	%
Interest expense	10,612			1.5	%	10,982		1.4	%
Other expense	811			0.1	%	8,319		1.1	%
Income before taxes	58,879			8.1	%	53,558		6.9	%
Provision for income taxes	21,090			2.9	%	12,131		1.6	%
Income from continuing operations	37,789			5.2	%	41,427		5.3	%
Loss from discontinued operations	(405		)	(0.1	)%	—		0.0	%
Net income	$	37,384		5.1	%	$	41,427	5.3	%

The following table sets forth the Company’s net sales by reportable segment for the nine months ended September 30, (in thousands):

										Change due to
	2017			2016			Total Change			Divestitures			Acquisitions		Operations
Net sales:
Residential Products	$	361,304		$	338,069		$	23,235		$	—		$	4,089	$	19,146
Renewable Energy and Conservation	202,690			204,648			(1,958		)	(6,545		)	15,252		(10,665		)
Industrial and Infrastructure Products	165,806			234,590			(68,784		)	(59,618		)	—		(9,166		)
Less: Intersegment sales	(994		)	(1,164		)	170			—			—		170
Net Industrial and Infrastructure Products	164,812			233,426			(68,614		)	(59,618		)	—		(8,996		)
Consolidated	$	728,806		$	776,143		$	(47,337	)	$	(66,163	)	$	19,341	$	(515	)

Consolidated net sales decreased by $47.3 million, or 6.1%, to $728.8 million for the nine months ended September 30, 2017 compared to the nine months ended September 30, 2016. The decrease in sales was primarily the result of divestitures related to the Company’s portfolio management activities during 2016. The Company sold its European industrial manufacturing business in April 2016 to a third party and exited both the Company's small European residential solar racking business and the Company's U.S. bar grating product line, both of these divestitures commenced during the fourth quarter of 2016. These divestitures resulted in a decrease in revenues of $66.2 million from the prior year. Partially offsetting these divestitures were net sales contributions from our recent acquisitions in our Renewable Energy and Conservation and Residential Products Segments, Nexus in October 2016 and Package Concierge in February 2017, respectively. A net decrease in volume of 2.0% in comparable revenue streams nearly offset by a modest 2.0% increase in pricing to customers also contributed to the overall decrease in sales year over year.

Net sales in our Residential Products segment increased6.9%, or $23.2 million to $361.3 million for the nine months ended September 30, 2017 compared to $338.1 million for the nine months ended September 30, 2016. The increase was largely the result of a net increase in volume along with sales generated from the acquisition of Package Concierge and an increase in pricing to customers. The net sales volume increase was due to an increase in demand for our ventilation and roofing products along with increased demand for our multifamily postal and parcel storage products.

Net sales in our Renewable Energy and Conservation segment decreased1.0%, or $2.0 million to $202.7 million for the nine months ended September 30, 2017 compared to $204.6 million for the nine months ended September 30, 2016. The decrease was the result of the exit of the Company's small European residential solar racking business and continued softness in our international markets, partially offset by sales generated from the acquisition of Nexus and increased volume in our domestic markets. As expected, total volume declined in the first nine months of 2017 as we entered 2017 with lower levels of backlog,

38

which resulted in lower sales in the first half of 2017 compared to the first half of 2016. Backlog has improved for this segment and now exceeds its prior year levels.

Net sales in our Industrial and Infrastructure Products segment decreased29.4%, or $68.6 million to $164.8 million for the nine months ended September 30, 2017 compared to $233.4 million for the nine months ended September 30, 2016. The decrease in net sales was the combined result of the Company's exit from its U.S. bar grating product line and the divestiture of our European industrial manufacturing business, along with a 5.0% decrease in volume as compared to the same period in the prior year. A decrease in demand for our infrastructure products, which include components for bridges and elevated highways, contributed to the decline in volume due to continued delay in infrastructure projects. We expect this decline to be temporary due to federal and state funding availability and as evidenced by an increase in segment backlog during the current year.

Our consolidated gross margin remained relatively unchanged at 24.7% for the nine months ended September 30, 2017 compared to 24.6% for the nine months ended September 30, 2016. The Company benefited from portfolio management actions during 2016 in which less profitable businesses or products lines were sold or exited in order to enable the Company to re-allocate leadership, time, capital and resources to the platforms and businesses with the highest potential revenue and margins. In addition, other portfolio management actions taken resulting from our 80/20 initiatives contributed to maintaining the margin as well. These benefits were largely offset by less favorable alignment of material costs to customer selling prices.

Selling, general, and administrative (SG&A) expenses decreased by $8.5 million, or 7.2%, to $109.5 million for the nine months ended September 30, 2017 from $118.0 million for the nine months ended September 30, 2016. The $8.5 million decrease was primarily due to a $11.5 million decrease in performance-based compensation expenses, along with a $1.5 million decrease in senior leadership transition costs. These decreases were partially offset by $5.9 million of additional expense from the acquisitions of Nexus and Package Concierge, along with a $2.9 million increase in portfolio management charges related to our 80/20 initiatives. SG&A expenses as a percentage of net sales decreased to 15.0% for the nine months ended September 30, 2017 compared to 15.2% for the nine months ended September 30, 2016.

The following table sets forth the Company’s income from operations and income from operations as a percentage of net sales by reportable segment for the nine months ended September 30, (in thousands):

	2017					2016					Total Change
Income (loss) from operations:
Residential Products	$	61,984		17.2	%	$	52,363		15.5	%	$	9,621
Renewable Energy and Conservation	18,381			9.1	%	34,969			17.1	%	(16,588		)
Industrial and Infrastructure Products	5,914			3.6	%	11,429			4.9	%	(5,515		)
Unallocated Corporate Expenses	(15,977		)	(2.2	)%	(25,902		)	(3.3	)%	9,925
Consolidated income from operations	$	70,302		9.6	%	$	72,859		9.4	%	$	(2,557	)

Our Residential Products segment generated an operating margin of 17.2% during the nine months ended September 30, 2017 compared to 15.5% during the nine months ended September 30, 2016. The increase of $9.6 million of operating profit is primarily due to the benefits of improved operational efficiencies and contributions from the 80/20 initiative.

The Renewable Energy and Conservation segment generated an operating margin of 9.1% in the current year compared to 17.1% in the prior year. The decrease was primarily due to lower volume, an unfavorable alignment of material costs to customer selling prices, along with $2.4 million of reduction of workforce and facility cleanup costs incurred to exit the European solar racking business.

Our Industrial and Infrastructure Products segment generated an operating margin of 3.6% during the nine months ended September 30, 2017 compared to 4.9% during the nine months ended September 30, 2016. The decrease was largely an unfavorable alignment of material costs to customer selling prices, partially offset by a net reduction in costs incurred to exit the Company's U.S. bar grating product line .

Unallocated corporate expenses decreased$9.9 million from $25.9 million during the nine months ended September 30, 2016 to $16.0 million during the nine months ended September 30, 2017. The lower expenses in the current year was primarily due to the decrease in performance-based compensation expenses.

39

The Company recorded other expense of $0.8 million for the nine months ended September 30, 2017. Other expense of $8.3 million for the nine months ended September 30, 2016 was primarily comprised of the $8.8 million pre-tax loss on the sale of our European industrial manufacturing business, partially offset by net gains on foreign currency transactions.

Interest expense decreased by $0.4 million to $10.6 million for the nine months ended September 30, 2017 compared to $11.0 million for the nine months ended September 30, 2016. During the nine months ended September 30, 2017 and 2016, no amounts were outstanding under our revolving credit facility.

We recognized a provision for income taxes of $21.1 million and $12.1 million, with effective tax rates of 35.8% and 22.7% for the nine months ended September 30, 2017 and 2016, respectively. The effective tax rate for the nine months ended September 30, 2017 exceeded the U.S. federal statutory rate of 35% due to state taxes and $2.2 million of pretax losses generated by the European residential solar racking business for which no tax benefit has been recorded as such benefit is not expected to be realizable, partially offset by net deductible permanent differences and favorable discrete items. The effective tax rate for the nine months ended September 30, 2016 was less than the U.S. federal statutory rate of 35% primarily due to a discrete tax benefit of $11.4 million resulting from the sale of our European industrial manufacturing business along with net deductible permanent differences, partially offset by state taxes.

Outlook

For the remainder of 2017, we continue to expect generally favorable market conditions for each of our segments and increased bidding activity and continued growth of backlogs in both our Infrastructure business and Renewable Energy & Conservation segment. While we see reason for some caution in certain of our end markets, we are optimistic about the final quarter of the year. We are adjusting our full year guidance of revenues in the $960 million to $965 million range. We are narrowing our full-year earnings guidance within our previous guidance range and expect earnings per share ("EPS") to be between $1.40 and $1.47 per diluted share, comparing favorably to $1.05 in 2016.

Our priorities for the remainder of 2017 will be to accelerate new product development initiatives, seek value-added acquisitions in attractive end markets, and continue to advance our 80/20 projects.

For the fourth quarter of 2017, we expect revenues in the range of $231 million to $236 million, and EPS to be between $0.23 and $0.30 per diluted share, compared to a loss of $0.24 per share in the fourth quarter of 2016.

Liquidity and Capital Resources

General

Our principal capital requirements are to fund our operations' working capital and capital improvements and to fund acquisitions. We will continue to invest in growth opportunities as appropriate while focusing on working capital efficiency and profit improvement opportunities to minimize the cash invested to operate our business. We have successfully generated positive cash flows from operating activities which have funded our capital requirements and recent acquisitions as noted below in “Cash Flows.”

On December 9, 2015, we entered into the Company's Fifth Amended and Restated Credit Agreement (the "Senior Credit Agreement") which includes a 5-year, $300 million revolving credit facility and provides the Company with access to capital and improved financial flexibility. As of September 30, 2017, our liquidity of $496.8 million consisted of $208.0 million of cash plus $288.8 million of availability under our revolving credit facility. We believe this liquidity, together with the cash expected to be generated from operations, should be sufficient to fund working capital needs and simplification initiatives that likely will need cash to fund transitions and future growth. We continue to search for strategic acquisitions and larger acquisitions may require additional borrowings and/or the issuance of our common stock.

Our Senior Credit Agreement provides the Company with liquidity and capital resources for use by our U.S. operations. Historically, our foreign operations have generated cash flow from operations sufficient to invest in working capital and fund their capital improvements. As of September 30, 2017, our foreign subsidiaries held $25.2 million of cash in U.S. dollars. We believe cash held by our foreign subsidiaries provides our foreign operations with the necessary liquidity to meet future obligations and allows the foreign business units to reinvest in their operations. These cash resources could eventually be used to grow our business internationally. Repatriation of this cash for domestic purposes could result in significant tax consequences.

Over the long-term, we expect that future obligations, including strategic business opportunities such as acquisitions, may be financed through a number of sources, including internally available cash, availability under our revolving credit facility, new

40

debt financing, the issuance of equity securities, or any combination of the above. Any potential acquisitions are evaluated based on our acquisition strategy, which includes the enhancement of our existing products, operations, or capabilities, expanding our access to new products, markets, and customers, and the improvement of shareholder value. The recent acquisitions of Nexus Corporation and Package Concierge on October 11, 2016 and February 22, 2017, respectively, were financed through cash on hand.

These expectations are forward-looking statements based upon currently available information and may change if conditions in the credit and equity markets deteriorate or other circumstances change. To the extent that operating cash flows are lower than current levels, or sources of financing are not available or not available at acceptable terms, our future liquidity may be adversely affected.

Cash Flows

The following table sets forth selected cash flow data for the nine months ended September 30, (in thousands):

	2017			2016
Cash provided by:
Operating activities of continuing operations	$	48,831		$	102,186
Investing activities of continuing operations	(10,711		)	(297		)
Financing activities of continuing operations	(1,733		)	1,260
Effect of exchange rate changes	1,468			1,055
Net increase in cash and cash equivalents	$	37,855		$	104,204

During the nine months ended September 30, 2017, we generated net cash from operating activities totaling $48.8 million, composed of net income of $37.8 million plus $20.5 million from non-cash charges including depreciation, amortization, stock compensation, and exit activities, partially offset by an investment in working capital and other net assets of $9.5 million. Net cash provided by operating activities for the nine months ended September 30, 2016 totaled $102.2 million, primarily composed of net income from continuing operations of $41.4 million plus non-cash charges including depreciation, amortization, stock compensation, loss on sale of a business and non-cash exit activity costs of $35.7 million along with a decease in working capital of $25.1 million.

During the nine months ended September 30, 2017, the cash invested in working capital and other net assets of $9.5 million included a $42.3 and $1.8 million increase in accounts receivable and other current assets and other assets, respectively, partially offset by a $25.1 and $7.5 million increase in accounts payable and accrued expenses and other non-current liabilities, respectively, as well as a $2.0 million decrease in inventory. The increase in accounts receivable is a result of continued increase in seasonal manufacturing activity. The increase in total other current assets is primarily due to the timing of prepaid expenses. Accounts payable increased due to the seasonal increase in manufacturing activity as well as the timing of quarter end vendor payments.The increase in accrued expenses and other non-current liabilities was largely due to costs related to the timing of customer contracts offset by a decrease in liabilities for equity based incentive plans as well as the timing of interest payments . The decrease in inventory is due to the Company's continued 80/20 simplification process efforts.

Net cash used in investing activities for the nine months ended September 30, 2017 of $10.7 million primarily consisted of $18.3 million of net cash paid for the acquisition of Package Concierge, capital expenditures of $5.1 million and a payment of $0.2 million related to the final purchase adjustment for the acquisition of Nexus. These payments were partially offset by net proceeds of $12.9 million from the sale of property and equipment. Net cash used in investing activities for the nine months ended September 30, 2016 of $0.3 million was the net result of capital expenditures of $7.6 million and $2.3 million related to the final purchase adjustment for the acquisition of RBI, largely offset by net proceeds of $8.3 million from the sale of our European industrial manufacturing business.

Net cash used in financing activities for the nine months ended September 30, 2017 of $1.7 million consisted of the purchase of treasury stock of $2.0 million and payment of long-term debt borrowings of $0.4 million partially offset by the proceeds received from the issuance of common stock of $0.7 million. Net cash provided by financing activities for the nine months ended September 30, 2016 of $1.3 million consisted of the proceeds received from the issuance of common stock of $2.9 million offset by the purchase of treasury stock of $1.2 million and payment of long-term debt borrowings of $0.4 million.

Senior Credit Agreement and Senior Subordinated Notes

41

Our Senior Credit Agreement is committed through December 9, 2020. Borrowings under the Senior Credit Agreement are secured by the trade receivables, inventory, personal property, equipment, and certain real property of the Company’s significant domestic subsidiaries. The Senior Credit Agreement provides for a revolving credit facility and letters of credit in an aggregate amount of $300 million. The Company can request additional financing from the banks to increase the revolving credit facility to $500 million or to provide a term loan of up to $200 million subject to conditions set forth in the Senior Credit Agreement. The Senior Credit Agreement contains three financial covenants. As of September 30, 2017, the Company is in compliance with all three covenants.

Interest rates on the revolving credit facility are based on the LIBOR plus an additional margin that ranges from 1.25% to 2.25% for LIBOR loans based on the Total Leverage Ratio. In addition, the revolving credit facility is subject to an undrawn commitment fee ranging between 0.20% and 0.30% based on the Total Leverage Ratio and the daily average undrawn balance.

As of September 30, 2017, we had $288.8 million of availability under the Senior Credit Agreement net of outstanding letters of credit of $11.2 million. No amounts were outstanding under our revolving credit facility as of either September 30, 2017 or December 31, 2016.

In addition to our Senior Credit Agreement, the Company issued $210.0 million of 6.25% Notes in January 2013 which are due February 1, 2021. Provisions of the 6.25% Notes include, without limitation, restrictions on indebtedness, liens, and distributions from restricted subsidiaries, asset sales, affiliate transactions, dividends, and other restricted payments. Dividend payments are subject to annual limits and interest is paid semiannually on February 1 and August 1 of each year.

Off Balance Sheet Financing Arrangements

We have no off-balance sheet arrangements, other than operating leases, that have or are reasonably likely to have a current or future effect on our financial condition, changes in financial condition, revenues or expenses, results of operations, liquidity, capital expenditures, or capital resources that is material to investors.

Contractual Obligations

Our contractual obligations have not changed materially from the disclosures included in Item 7 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.

Critical Accounting Policies

In the current year, there have been no changes to our critical accounting policies and estimates from those disclosed in the consolidated financial statements and accompanying notes contained in Company's Annual Report on Form 10-K for the year ended December 31, 2016.

Recent Accounting Pronouncements

See Note 2 to the Company's consolidated financial statements in Part I, Item 1 of this Form 10-Q for further information on recent accounting pronouncements.

Item 3. Qualitative and Quantitative Disclosures About Market Risk

In the ordinary course of business, the Company is exposed to various market risk factors, including changes in general economic conditions, competition, foreign exchange rates, and raw materials pricing and availability. In addition, the Company is exposed to other financial market risks, primarily related to its long-term debt and foreign operations. There have been no material changes to the Company's exposure to market risk since December 31, 2016.

42

Item 4. Controls and Procedures

(a) Evaluation of Disclosure Controls and Procedures

The Company maintains a system of disclosure controls and procedures (as defined in Rule 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934). The Company’s Chief Executive Officer and the Chief Financial Officer evaluated the effectiveness of the Company’s disclosure controls as of the end of the period covered in this report. Based upon that evaluation and the definition of disclosure controls and procedures contained in Rule 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, the Company’s Chief Executive Officer and Chief Financial Officer have concluded that as of the end of such period the Company’s disclosure controls and procedures were effective.

(b) Changes in Internal Control over Financial Reporting

There have been no changes in the Company’s internal control over financial reporting (as defined by Rule 13a-15(f) or 15d-15(f)) that occurred during the period covered by this Quarterly Report on Form 10-Q that have materially affected the Company’s internal control over financial reporting.

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

Not applicable.

Item 1A. Risk Factors

In addition to the other information set forth in this report, you should carefully consider the risks discussed in “Part I, Item 1A. Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2016. These risks and uncertainties have the potential to materially affect our business, financial condition, results of operation, cash flows, and future prospects. Additional risks and uncertainties not currently known to us or that we currently deem immaterial may materially adversely impact our business, financial condition, or operating results.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Not applicable.

Item 3. Defaults Upon Senior Securities

Not applicable.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

Not applicable.

43

Item 6. Exhibits

(a) Exhibits

a.	31.1	Certification of President and Chief Executive Officer pursuant to Section 302 of the Sarbanes–Oxley Act of 2002.
b.	31.2	Certification of Senior Vice President and Chief Financial Officer pursuant to Section 302 of the Sarbanes–Oxley Act of 2002.
c.	32.1	Certification of the President and Chief Executive Officer pursuant to Title 18, United States Code, Section 1350, as adopted pursuant to Section 906 of the Sarbanes–Oxley Act of 2002.
d.	32.2	Certification of the Senior Vice President and Chief Financial Officer pursuant to Title 18, United States Code, Section 1350, as adopted pursuant to Section 906 of the Sarbanes–Oxley Act of 2002.
e.	101.INS	XBRL Instance Document *
f.	101.SCH	XBRL Taxonomy Extension Schema Document *
g.	101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document *
h.	101.LAB	XBRL Taxonomy Extension Label Linkbase Document *
i.	101.PRA	XBRL Taxonomy Extension Presentation Linkbase Document *
j.	101.DEF	XBRL Taxonomy Extension Definition Linkbase Document *

* Submitted electronically with this Quarterly Report on Form 10-Q.

44

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

GIBRALTAR INDUSTRIES, INC.

(Registrant)

/s/ Frank G. Heard

Frank G. Heard

President and Chief Executive Officer

/s/ Timothy F. Murphy

Timothy F. Murphy

Senior Vice President and

Chief Financial Officer

Date: November 3, 2017

45

EX-31.1

EXHIBIT 31.1

CERTIFICATIONS

I, Frank G. Heard, certify that:

1. I have reviewed this report on Form 10-Q of Gibraltar Industries, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) or 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) or 15d-15(f)) for the registrant and have:

a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	November 3, 2017	/s/ Frank G. Heard
		Frank G. Heard
		President and Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATIONS

I, Timothy F. Murphy, certify that:

1. I have reviewed this report on Form 10-Q of Gibraltar Industries, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) or 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) or 15d-15(f)) for the registrant and have:

a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	November 3, 2017	/s/ Timothy F. Murphy
		Timothy F. Murphy
		Senior Vice President and Chief Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION OF PRESIDENT AND CHIEF EXECUTIVE OFFICER

PURSUANT TO TITLE 18, UNITED STATES CODE, SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Frank G. Heard, President and Chief Executive Officer, of Gibraltar Industries, Inc. (the “Company”), certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that:

The Quarterly Report on Form 10-Q of the Company for the year ended September 30, 2017 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m); and

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Frank G. Heard

Frank G. Heard

President and Chief Executive Officer

November 3, 2017

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

EXHIBIT 32.2

CERTIFICATION OF SENIOR VICE PRESIDENT AND CHIEF FINANCIAL OFFICER

PURSUANT TO TITLE 18, UNITED STATES CODE, SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Timothy F. Murphy, Senior Vice President and Chief Financial Officer, of Gibraltar Industries, Inc. (the “Company”), certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that:

The Quarterly Report on Form 10-Q of the Company for the year ended September 30, 2017 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m); and

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Timothy F. Murphy

Timothy F. Murphy

Senior Vice President and Chief Financial Officer

November 3, 2017

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

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Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 01, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q3
Trading Symbol	ROCK
Entity Registrant Name	GIBRALTAR INDUSTRIES, INC.
Entity Central Index Key	0000912562
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		31,688,154

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Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Net Sales	$ 274,574	$ 272,734	$ 728,806	$ 776,143
Cost of sales	205,839	204,847	548,991	585,263
Gross profit	68,735	67,887	179,815	190,880
Selling, general, and administrative expense	33,042	41,365	109,513	118,021
Income from operations	35,693	26,522	70,302	72,859
Interest expense	3,486	3,625	10,612	10,982
Other expense	404	159	811	8,319
Income before taxes	31,803	22,738	58,879	53,558
Provision for income taxes	11,184	8,952	21,090	12,131
Income from continuing operations	20,619	13,786	37,789	41,427
Discontinued operations:
Loss before taxes	0	0	(644)	0
Benefit of income taxes	0	0	(239)	0
Loss from discontinued operations	0	0	(405)	0
Net income	$ 20,619	$ 13,786	$ 37,384	$ 41,427
Net earnings per share – Basic:
Income from continuing operations, per basic share (in USD per share)	$ 0.65	$ 0.44	$ 1.19	$ 1.32
Loss from discontinued operations per basic share (in USD per share)	0.00	0.00	(0.01)	0.00
Net earnings per share - Basic (in USD per share)	0.65	0.44	1.18	1.32
Net earnings per share - Diluted
Income from continuing operations, per diluted share (in USD per share)	0.64	0.43	1.17	1.29
Loss from discontinued operation per diluted share (in USD per share)	0.00	0.00	(0.01)	0.00
Net earnings per share - Diluted (in USD per share)	$ 0.64	$ 0.43	$ 1.16	$ 1.29
Weighted Average Number of Shares Outstanding
Weighted average basic shares outstanding (in shares)	31,703	31,579	31,700	31,493
Weighted average shares outstanding, diluted (in shares)	32,210	32,176	32,216	32,005

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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net income	$ 20,619	$ 13,786	$ 37,384	$ 41,427
Other comprehensive income (loss):
Foreign currency translation adjustment	1,581	(193)	3,351	10,638
Adjustment to retirement benefit liability, net of tax	(2)	61	(8)	59
Adjustment to post employment health care benefit liability, net of tax	29	38	88	114
Other comprehensive income (loss)	1,608	(94)	3,431	10,811
Total comprehensive income	$ 22,227	$ 13,692	$ 40,815	$ 52,238

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Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 208,032	$ 170,177
Accounts receivable, net	166,718	124,072
Inventories	85,156	89,612
Other current assets	8,195	7,336
Total current assets	468,101	391,197
Property, plant, and equipment, net	94,488	108,304
Goodwill	321,093	304,032
Acquired intangibles	107,943	110,790
Other assets	4,672	3,922
Total assets	996,297	918,245
Current liabilities:
Accounts payable	96,181	69,944
Accrued expenses	83,264	70,392
Billings in excess of cost	18,234	11,352
Current maturities of long-term debt	400	400
Total current liabilities	198,079	152,088
Long-term debt	209,425	209,237
Deferred income taxes	38,162	38,002
Other non-current liabilities	45,200	58,038
Shareholders’ equity:
Preferred stock, $0.01 par value; authorized 10,000 shares; none outstanding	0	0
Common stock, $0.01 par value; authorized 50,000 shares; 32,275 shares and 32,085 shares issued and outstanding in 2017 and 2016	322	320
Additional paid-in capital	269,880	264,418
Retained earnings	249,386	211,748
Accumulated other comprehensive loss	(4,290)	(7,721)
Cost of 588 and 530 common shares held in treasury in 2017 and 2016	(9,867)	(7,885)
Total shareholders’ equity	505,431	460,880
Total liabilities and shareholders' equity	$ 996,297	$ 918,245

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Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	32,275,000	32,085,000
Treasury stock, shares	588,000	530,000

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash Flows from Operating Activities
Net income	$ 37,384	$ 41,427
Loss from discontinued operations	(405)	0
Income from continuing operations	37,789	41,427
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,427	17,551
Stock compensation expense	5,069	4,666
Net gain on sale of assets	(139)	(225)
Loss on sale of business	0	8,763
Exit activity (recoveries) costs, non-cash	(1,931)	3,876
(Benefit of) provision for deferred income taxes	(136)	355
Other, net	1,411	735
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable	(42,310)	3,796
Inventories	2,016	9,738
Other current assets and other assets	(2,002)	(1,901)
Accounts payable	25,134	2,367
Accrued expenses and other non-current liabilities	7,503	11,038
Net cash provided by operating activities	48,831	102,186
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	(18,494)	(2,314)
Net proceeds from sale of property and equipment	12,935	249
Purchases of property, plant, and equipment	(5,152)	(7,600)
Net proceeds from sale of business	0	8,250
Other, net	0	1,118
Net cash used in investing activities	(10,711)	(297)
Cash Flows from Financing Activities
Payment of debt issuance costs	0	54
Purchase of treasury stock at market prices	(1,982)	(1,178)
Net proceeds from issuance of common stock	649	2,892
Net cash (used in) provided by financing activities	(1,733)	1,260
Effect of exchange rate changes on cash	1,468	1,055
Net increase in cash and cash equivalents	37,855	104,204
Cash and cash equivalents at beginning of year	170,177	68,858
Cash and cash equivalents at end of period	$ 208,032	$ 173,062

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Consolidated Statement of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 0		$ (254)	$ 254
Balance, shares at Dec. 31, 2016		32,085				530
Balance, value at Dec. 31, 2016	460,880	$ 320	264,418	211,748	$ (7,721)	$ (7,885)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	37,384
Foreign currency translation adjustment	3,351				3,351
Adjustment to retirement benefit liability, net of taxes of ($5)	(8)				(8)
Adjustment to post employment health care benefit liability, net of taxes of $54	88				88
Stock compensation expense	5,069		5,069
Stock options exercised, shares		40
Stock options exercised	649	$ 0	649
Issuance of restricted stock, shares		2
Issuance of restricted stock	0	$ 0	0
Net settlement of restricted stock units, shares		148				58
Net settlement of restricted stock units	(1,982)	$ 2	(2)			$ (1,982)
Balance, shares at Sep. 30, 2017		32,275				588
Balance, value at Sep. 30, 2017	$ 505,431	$ 322	$ 269,880	$ 249,386	$ (4,290)	$ (9,867)

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Consolidated Statement of Shareholders' Equity (Parenthetical) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($)
Statement of Stockholders' Equity [Abstract]
Adjustment to pension benefit liability, taxes	$ 1
Adjustment to post-retirement health care benefit liability, taxes	$ (22)

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Consolidated Financial Statements

9 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

CONSOLIDATED FINANCIAL STATEMENTS

CONSOLIDATED FINANCIAL STATEMENTS

The accompanying unaudited consolidated financial statements have been prepared by management in accordance with U.S. generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. In the opinion of management, all adjustments consisting of normal recurring adjustments considered necessary for the fair presentation of results for the interim period have been included. The results of operations for the three and nine month periods ended September 30, 2017 are not necessarily indicative of the results expected for the full year. The Company is subject to reduced activity in the first and fourth quarters as colder, inclement weather reduces order rates from end markets it serves. The accompanying unaudited consolidated financial statements should be read in conjunction with the financial statements and notes thereto included in our annual Form 10-K for the year ended December 31, 2016.

Certain prior year amounts have been reclassified to conform to current year's presentation. Refer to Note 2 for a summary of ASUs we adopted during 2017 and the related financial statement impact.

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Recent Accounting Pronouncements (Notes)

9 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

RECENT ACCOUNTING PRONOUNCEMENTS

RECENT ACCOUNTING PRONOUNCEMENTS

Recent Accounting Pronouncements Adopted

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2016-09 Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting	The standard simplifies the accounting for share-based payment award transactions including: income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. The provisions of this standard are effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption is permitted.	The Company has adopted all amendments included in this standard under each required transition method.  The Company concluded there were no material changes to prior periods, except for the following: the Company (a) reclassified its prior interim period excess tax benefit for stock compensation of $941,000 on its consolidated statement of cash flows from a financing activity to an operating activity; and (b) recognized a cumulative-effect adjustment of $254,000 as an increase to retained earnings and decrease to additional paid-in capital on the Company's consolidated statement of shareholders' equity as of January 1, 2017 to reflect the change in value for a restricted stock unit liability award as of December 31, 2016, as if the award had been classified as an equity award since its respective grant date. Date of adoption: Q1 2017

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment	The standard eliminates the "Step 2" analysis to determine the amount of impairment realized when a reporting unit's carrying amount exceeds its fair value in its "Step 1" analysis of accounting for impairment of goodwill. The impairment charge would be the amount determined in "Step 1." The provisions of this standard are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for annual and interim goodwill impairment testing dates after January 1, 2017.	The Company has adopted this standard and it did not have any impact on the Company's consolidated financial statements. Date of Adoption: Q1 2017
ASU No. 2017-07 Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	The standard requires an employer to recognize the service cost component of net periodic pension costs and net periodic postretirement benefit costs in the same line item(s) as other compensation costs from services rendered by pertinent employees during the period. Other components of net benefit cost are required to be presented separately from the service cost component and outside a subtotal of income from operations. The provisions of this standard are effective for annual reporting periods beginning after December 15, 2017, including interim periods within those annual periods. Early adoption is permitted as of the beginning of an annual period for which financial statements (interim or annual) have not been issued or made available for issuance.	The Company has adopted this standard and has applied it retrospectively for the presentation of the service cost component, as well as, other components of net periodic pension cost and net periodic postretirement benefit cost in our statement of operations. The adoption decreased selling, general, and administrative expense by $159,000 for the three months ended September 30, 2016 and $479,000 for the nine months ended September 30, 2016, and comparably increased other expense by the same amounts, respectively. This guidance did not have any impact on our balance sheet or our statement of cash flows. Date of Adoption: Q1 2017

Recent Accounting Pronouncements Not Yet Adopted

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2014-09 Revenue from Contracts with Customers (Topic 606) And All Related ASUs	The standard requires an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also requires additional disclosures about the nature, amount, timing, and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and assets recognized from costs incurred to obtain or fulfill a contract. The provisions of the standard, as well as all subsequently issued clarifications to the standard, are effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. The standard can be adopted using either a full retrospective or modified retrospective approach.	The Company currently believes the most significant impact of this standard upon adoption relates to the revenue recognition for custom fabricated products within the Company's Industrial and Infrastructure Products segment. Under this standard, the Company expects to recognize revenue on an over time basis on custom fabricated products in the Industrial and Infrastructure Products segment which is a change from our current revenue recognition policy of point-in-time basis. The Company expects revenue recognition related to the remaining Industrial and Infrastructure Products segment, Residential Products segment and Renewable Energy and Conservation segment to remain substantially unchanged upon adoption of this standard. The Company has identified and is in the process of implementing appropriate changes to the Company's business processes, systems and internal controls to support recognition and disclosure under this standard. The Company currently anticipates adopting the modified retrospective transition method approach. The Company has not yet completed the process of quantifying the effects of any changes that will result from adoption. Planned date of adoption: Q1 2018

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2016-02 Leases (Topic 842)	The standard requires lessees to recognize most leases as assets and liabilities on the balance sheet, but record expenses on the statement of operations in a manner similar to current accounting. For lessors, the guidance modifies the classification criteria and accounting for sales-type and direct financing leases. The standard also requires additional disclosures about leasing arrangements and requires a modified retrospective transition approach for existing leases, whereby the standard will be applied to the earliest year presented. The provisions of the standard are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted.	The Company is currently evaluating the impact of this standard on the Company's consolidated financial statements and related disclosures, including the impact on the Company's current lease portfolio from both a lessor and lessee perspective. The adoption of this standard will primarily result in an increase in the assets and liabilities on the Company's consolidated balance sheet and related disclosures. Planned date of adoption: Q1 2019
ASU No. 2016-15 Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments	The standard provides guidance on eight specific cash flow issues to reduce diversity in reporting. The provisions of this standard are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted.	The Company is currently evaluating the requirements of this standard and has not yet determined its impact on the Company's consolidated financial statements. Planned date of adoption: Q1 2018
ASU No. 2016-16 Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory	The standard allows an entity to recognize income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. The provisions of this standard are effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. Early adoption is permitted as of the beginning of an annual reporting period for which financial statements (interim or annual) have not been issued or made available for issuance.	The Company is currently evaluating the requirements of this standard and has not yet determined its impact on the Company's consolidated financial statements. Planned date of adoption: Q1 2018

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Accounts Receivable

9 Months Ended

Sep. 30, 2017

Receivables [Abstract]

ACCOUNTS RECEIVABLE

ACCOUNTS RECEIVABLE, NET

Accounts receivable consists of the following (in thousands):

	September 30, 2017			December 31, 2016
Trade accounts receivable	$	104,031		$	81,193
Contract receivables:
Amounts billed	49,866			41,569
Costs in excess of billings	18,374			6,582
Total contract receivables	68,240			48,151
Total accounts receivable	172,271			129,344
Less allowance for doubtful accounts	(5,553		)	(5,272		)
Accounts receivable	$	166,718		$	124,072

Contract receivables are primarily associated with developers, contractors and customers in connection with the Renewable Energy and Conservation segment. Costs in excess of billings principally represent revenues recognized on contracts that were not billable as of the balance sheet date. These amounts will be billed in accordance with contract terms, generally as certain milestones are reached or upon shipment. All of the costs in excess of billings are expected to be collected within one year. In situations where billings exceed revenues recognized, the excess is included in billings in excess of cost in the Consolidated Balance Sheet.

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Inventories

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

INVENTORIES

INVENTORIES

Inventories consist of the following (in thousands):

	September 30, 2017		December 31, 2016
Raw material	$	41,569	$	41,758
Work-in-process	12,123		12,268
Finished goods	31,464		35,586
Total inventories	$	85,156	$	89,612

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Acquisitions

9 Months Ended

Sep. 30, 2017

Business Combinations [Abstract]

ACQUISITIONS

ACQUISITIONS

On February 22, 2017, the Company acquired all of the outstanding stock of Package Concierge. Package Concierge is a leading provider of multifamily electronic package delivery locker systems in the United States.

The acquisition of Package Concierge is expected to enable the Company to expand its position in the fast-growing package delivery solutions market. The results of Package Concierge have been included in the Company's consolidated financial results since the date of acquisition (within the Company's Residential Products segment). The final aggregate purchase consideration for the acquisition of Package Concierge was $18,917,000, which includes a working capital adjustment and certain other adjustments provided for in the stock purchase agreement.

The purchase price for the acquisition was allocated to the assets acquired and liabilities assumed based upon their respective fair values. The excess consideration was recorded as goodwill and approximated $16,863,000, which is not deductible for tax purposes. Goodwill represents future economic benefits arising from other assets acquired that could not be individually identified including workforce additions, growth opportunities, and increased presence in the building products markets.

The allocation of the purchase consideration to the fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands):

Cash	$	590
Working capital	(2,071		)
Property, plant and equipment	55
Acquired intangible assets	3,600
Other assets	8
Deferred income taxes	(128		)
Goodwill	16,863
Fair value of purchase consideration	$	18,917

The intangible assets acquired in this acquisition consisted of the following (in thousands):

	Fair Value		Estimated Useful Life
Trademarks	$	600	Indefinite
Technology	1,300		10 years
Customer relationships	1,700		7 years
Total	$	3,600

On October 11, 2016, the Company acquired all of the outstanding stock of Nexus Corporation ("Nexus"). Nexus is a leading provider of commercial-scale greenhouses to customers in the United States.

The acquisition of Nexus is expected to enable the Company to strengthen its position in the commercial greenhouse market in the United States. The results of Nexus have been included in the Company's consolidated financial results since the date of acquisition (within the Company's Renewable Energy and Conservation segment). The final aggregate purchase consideration for the acquisition of Nexus was $23,762,000, which includes a working capital adjustment and certain other adjustments provided for in the stock purchase agreement. At December 31, 2016, $1,000,000 of the estimated purchase price was accrued. Upon settlement of the final purchase adjustments, $167,000 was paid in cash by the Company during the first quarter of 2017.

The purchase price for the acquisition was allocated to the assets acquired and liabilities assumed based upon their respective fair values. The excess consideration was recorded as goodwill and approximated $11,451,000, of which all is deductible for tax purposes.

The allocation of the purchase consideration to the fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands):

Cash	$	2,495
Working capital	(1,109		)
Property, plant and equipment	4,702
Acquired intangible assets	6,200
Other assets	23
Goodwill	11,451
Fair value of purchase consideration	$	23,762

The intangible assets acquired in this acquisition consisted of the following (in thousands):

	Fair Value		Estimated Useful Life
Trademarks	$	3,200	Indefinite
Technology	1,300		15 years
Customer relationships	800		11 years
Backlog	900		0.25 years
Total	$	6,200

The acquisitions of Package Concierge and Nexus were funded from available cash on hand. The Company incurred certain acquisition-related costs composed of legal and consulting fees, and these costs were recognized as a component of selling, general and administrative expenses in the consolidated statements of operations.

The following table summarizes acquisition-related costs for the three and nine months ended September 30 (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017		2016
Acquisition-related costs	$	31	$	—	$	146	$	31

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Goodwill and Related Intangible Assets

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND RELATED INTANGIBLE ASSETS

GOODWILL AND RELATED INTANGIBLE ASSETS

Goodwill

The changes in the carrying amount of goodwill for the nine months ended September 30, 2017 are as follows (in thousands):

	Residential Products		Industrial and Infrastructure Products		Renewable Energy & Conservation			Total
Balance at December 31, 2016	$	181,285	$	53,884	$	68,863		$	304,032
Acquired goodwill	16,863		—		—			16,863
Adjustments to prior year acquisitions	—		—		(832		)	(832		)
Foreign currency translation	—		432		598			1,030
Balance at September 30, 2017	$	198,148	$	54,316	$	68,629		$	321,093

Goodwill is recognized net of accumulated impairment losses of $235,419,000 as of September 30, 2017 and December 31, 2016.

Acquired Intangible Assets

Acquired intangible assets consist of the following (in thousands):

	September 30, 2017				December 31, 2016
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization		Estimated Life
Indefinite-lived intangible assets:
Trademarks	$	45,153	$	—	$	44,720	$	—	Indefinite
Finite-lived intangible assets:
Trademarks	5,882		2,921		5,808		2,427		5 to 15 Years
Unpatented technology	28,020		11,523		26,720		10,041		5 to 20 Years
Customer relationships	80,719		38,182		78,569		33,585		5 to 17 Years
Non-compete agreements	1,649		854		1,649		623		4 to 10 Years
Backlog	—		—		900		900		0.25 Years
	116,270		53,480		113,646		47,576
Total acquired intangible assets	$	161,423	$	53,480	$	158,366	$	47,576

The following table summarizes the acquired intangible asset amortization expense for the three and nine months ended September 30 (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017		2016
Amortization expense	$	2,208	$	2,159	$	6,600	$	6,541

Amortization expense related to acquired intangible assets for the remainder of fiscal 2017 and the next five years thereafter is estimated as follows (in thousands):

2017	$2,157
2018	$8,288
2019	$7,617
2020	$7,105
2021	$6,503
2022	$6,092

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Long-Term Debt

9 Months Ended

Sep. 30, 2017

Long-term Debt, Unclassified [Abstract]

LONG-TERM DEBT

LONG-TERM DEBT

Long-term debt consists of the following (in thousands):

	September 30, 2017			December 31, 2016
Senior Subordinated 6.25% Notes	$	210,000		$	210,000
Other debt	2,400			2,800
Less unamortized debt issuance costs	(2,575		)	(3,163		)
Total debt	209,825			209,637
Less current maturities	400			400
Total long-term debt	$	209,425		$	209,237

The Company's Fifth Amended and Restated Credit Agreement dated December 9, 2015 (the "Senior Credit Agreement") was amended to convert our secured asset based credit facility into a secured cash flow revolver, and terminates on December 9, 2020.

The Senior Credit Agreement provides for a revolving credit facility and letters of credit in an aggregate amount of $300 million. The Company has the option to request additional financing from the banks to either increase the revolving credit facility to $500 million or to provide a term loan of up to $200 million. The Senior Credit Agreement contains financial covenants. As of September 30, 2017, the Company is in compliance with all covenants.

Borrowings under the Senior Credit Agreement are secured by the trade receivables, inventory, personal property, equipment, and certain real property of the Company’s significant domestic subsidiaries. Interest rates on the revolving credit facility are based on the LIBOR plus an additional margin that ranges from 1.25% to 2.25% for LIBOR loans based on the Total Leverage Ratio.

In addition, the revolving credit facility is subject to an undrawn commitment fee ranging between 0.20% and 0.30% based on the Total Leverage Ratio and the daily average undrawn balance.

Standby letters of credit of $11,216,000 have been issued under the Senior Credit Agreement on behalf of the Company as of September 30, 2017. These letters of credit reduce the amount otherwise available under the revolving credit facility. As of September 30, 2017, the Company had $288,784,000 of availability under the revolving credit facility. No borrowings were outstanding under the revolving credit facility at September 30, 2017 and December 31, 2016.

On January 31, 2013, the Company issued $210 million of 6.25% Senior Subordinated Notes (6.25% Notes) due February 1, 2021.The provisions of the 6.25% Notes include, without limitation, restrictions on indebtedness, liens, and distributions from restricted subsidiaries, asset sales, affiliate transactions, dividends, and other restricted payments. Dividend payments are subject to annual limits and interest is paid semiannually on February 1 and August 1 of each year.

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Related Party Transactions

9 Months Ended

Sep. 30, 2017

Related Party Transactions [Abstract]

RELATED PARTY TRANSACTIONS

RELATED PARTYTRANSACTIONS

An officer of one of the Company's operating segments is the owner of certain real estate properties leased for manufacturing and distribution purposes by that operating segment. The leases are in effect until June 2018 and June 2020. For the three and nine months ended September 30, 2017 and 2016, the Company incurred the following lease expense for these properties (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017		2016
Cost of sales	$	262	$	227	$	787	$	679

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Accumulated Other Comprehensive (Loss) Income

9 Months Ended

Sep. 30, 2017

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME

ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME

The cumulative balance of each component of accumulated other comprehensive loss, net of tax, is as follows (in thousands):

	Foreign Currency Translation Adjustment			Minimum Pension Liability Adjustment			Unamortized Post Retirement Health Care Costs			Total Pre-Tax Amount			Tax (Benefit) Expense			Accumulated  Other Comprehensive (Loss) Income
Balance at December 31, 2016	$	(5,848	)	$	197		$	(3,150	)	$	(8,801	)	$	(1,080	)	$	(7,721	)
Minimum pension and post retirement health care plan adjustments	—			(13		)	142			129			49			80
Foreign currency translation adjustment	3,351			—			—			3,351			—			3,351
Balance at September 30, 2017	$	(2,497	)	$	184		$	(3,008	)	$	(5,321	)	$	(1,031	)	$	(4,290	)

The realized adjustments relating to the Company’s minimum pension liability and post retirement health care costs were reclassified from accumulated other comprehensive loss and included in other expense in the consolidated statements of operations.

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Equity-Based Compensation

9 Months Ended

Sep. 30, 2017

Share-based Compensation [Abstract]

EQUITY-BASED COMPENSATION

EQUITY-BASED COMPENSATION

On May 6, 2016, the shareholders of the Company authorized the Gibraltar Industries, Inc. 2016 Stock Plan for Non-Employee Directors ("Non-Employee Directors Plan"). The Non-Employee Directors Plan is a compensation plan that allows the Company to grant awards of shares of the Company's common stock to non-employee Directors of the Company. In connection with the Non-Employee Directors Plan, the Company adopted a new stock deferral plan, the Gibraltar Industries, Inc. Non-Employee Director Stock Deferral Plan ("Deferral Plan"). The Deferral Plan permits non-employee Directors of the Company to defer receipt of shares of common stock which the non-employee Director is entitled to receive pursuant to the terms of the Non-Employee Directors Plan.

On May 7, 2015, the shareholders of the Company authorized the Gibraltar Industries, Inc. 2015 Equity Incentive Plan (the "Plan") and simultaneously amended the 2005 Equity Incentive Plan (the "Prior Plan") to terminate issuance of further awards from the Prior Plan. The Plan is an incentive compensation plan that allows the Company to grant equity-based incentive compensation awards to eligible participants. Awards under the Plan may be in the form of options, restricted shares, restricted units, performance shares, performance stock units, and rights.

Equity Based Awards - Settled in Stock

The following table provides the number of stock unit awards granted during the nine months ended September 30, which will convert to shares upon vesting, along with the weighted average grant date fair values:

	2017			2016
Awards	Number of Awards	Weighted Average Grant Date Fair Value		Number of Awards	Weighted Average Grant Date Fair Value
Performance stock units	108,748	$	42.72	—	$	—
Restricted stock units	120,048	$	37.14	139,982	$	25.15
Options	25,000	$	42.35	—	$	—
Deferred stock units	10,170	$	34.42	11,945	$	29.30
Restricted shares	2,034	$	34.42	3,185	$	29.30

Included in the performance stock units disclosed above are 78,482 units awarded in February 2017 and 5,266 units award in April 2017 for which the final number of units that will convert to shares will be determined based on the Company’s actual return on invested capital (ROIC) relative to the ROIC targeted for the performance period ended December 31, 2017. Additionally, included in the performance stock units disclosed above, there were 20,000 units awarded in February 2017 and 5,000 units award in April 2017. For these awards, the final number of shares to be issued to the recipient will be determined based upon the ranking of the Company’s total shareholder return over a three (3) year performance period ended February 1, 2020 compared to the total shareholder return of companies in the S&P Small Cap Industrial Sector over such period.

Performance Stock Units - Settled in Cash

The Company awarded performance stock units ("PSUs") that will convert to cash after three years based upon a one year performance period in 2016 and 2015. The cost of these awards is recognized over the requisite vesting period. The PSUs earned over the performance period are determined based on the Company’s actual return on invested capital (ROIC) relative to the ROIC targeted for the performance period.

During the 2016 performance period, the participants earned an aggregate of 256,000 PSUs, representing 200% of the targeted

2016 award of 128,000. This award will convert to cash payable in January 2019.

During the 2015 performance period, the participants earned an aggregate of 438,000 PSUs, representing 200% of the targeted 2015 award of 219,000. This award will convert to cash payable in January 2018.

The following table summarizes the compensation expense recognized for the PSUs, which will convert to cash, for the three and nine months ended September 30, (in thousands):

	Three Months Ended  September 30,					Nine Months Ended  September 30,
	2017			2016		2017		2016
PSUs compensation (recovery) expense	$	(405	)	$	4,148	$	1,673	$	7,889

Management Stock Purchase Plan

The Management Stock Purchase Plan ("MSPP") provides participants the ability to defer a portion of their compensation, which deferral is converted to restricted stock units, and credited to an account. Under the MSPP, the Company provides a matching award in restricted stock units equal to a percentage of the employees' compensation. Matching awards are not provided to directors. The account represents a share-based liability converted to and settled in cash which is payable to participants upon retirement or a termination of their service to the Company.

The following table provides the number of restricted stock units credited to active participant accounts and the payments made with respect to restricted stock units issued under the MSPP during the nine months ended September 30,

	2017		2016
Restricted stock units credited	90,754		192,380
Share-based liabilities paid (in $1000s)	$	2,392	$	2,753

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Fair Value Measurements

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, various techniques and assumptions can be used to estimate fair value. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement as follows:

• Level 1 - Quoted prices in active markets for identical assets or liabilities.

• Level 2 - Observable inputs other than quoted prices in active markets for similar assets and liabilities.

• Level 3 - Inputs that are unobservable inputs for the asset or liability.

The Company had no financial assets or liabilities measured at fair value on a recurring basis at September 30, 2017 and December 31, 2016. The Company’s only financial instrument for which the carrying value differs from its fair value is long-term debt. At September 30, 2017 and December 31, 2016, the fair value of outstanding debt net of unamortized debt issuance costs was $218,700,000 and $219,898,000, respectively, compared to its carrying value of $209,825,000 and $209,637,000, respectively.  The fair value of the Company’s 6.25% Notes is classified as Level 2 within the fair value hierarchy and was estimated based on quoted market prices adjusted for unamortized debt issuance costs.

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Exit Activity Costs and Asset Impairments

9 Months Ended

Sep. 30, 2017

Restructuring and Related Activities [Abstract]

EXIT ACTIVITY COSTS AND ASSET IMPAIRMENTS

EXIT ACTIVITY COSTS AND ASSET IMPAIRMENTS

The Company is in the third year of its five year planned transformation strategy formulated to transform its operations and improve its financial results over this five year period. This strategy includes an 80/20 simplification initiative which, in part, focuses the Company’s internal resources on further increasing the value provided to our customers. A result of this initiative was the identification of low-volume, low margin, internally-produced products which have been or will be outsourced or discontinued. Portfolio management, another key part of the strategy and a natural adjunct to the 80/20 initiative, is another initiative in which management conducts strategic reviews of our current portfolio for future profitable growth and greater shareholder returns. This initiative has resulted in the sale and exiting of less profitable businesses or products lines in order to enable the Company to re-allocate leadership, time, capital and resources to the highest potential platforms and businesses. Exit activity costs and asset impairment charges were incurred as a result of these initiatives.

Exit activity costs were incurred during the nine months ended September 30, 2017 which related to contract termination costs, severance costs, and other moving and closing costs. These costs were the result of the closing and consolidation of facilities, relocation of inventory and equipment at those facilities and the reduction of workforce associated with the discontinued products and closed facilities. During the nine months ended September 30, 2017, asset impairment charges incurred were more than offset by a gain on sale of assets previously impaired in 2016 as a result of businesses and product lines discontinued. Specifically, the exit of both the Company's small European residential solar racking business and the exit of the Company's U.S. bar grating product line, which commenced during the fourth quarter of 2016, transacted sales of assets during the nine months ended September 30, 2017 which resulted in a net gain. These exits were completed in the first half of 2017. During the nine months ended September 30, 2017, asset impairment charges were incurred related to the write-down of inventory, impairment of machinery and equipment and intangible assets associated with either discontinued product lines or the reduction of manufactured goods offered within a product line. These assets were written down to their sale or scrap value, and were subsequently sold or disposed of. During the nine months ended September 30, 2017, the Company closed three facilities as a result of this strategy.

During the nine months ended September 30, 2016, the Company incurred asset impairment charges and exit activity costs resulting from the above strategy as well. As a result of these initiatives, the Company sold its European industrial manufacturing business to a third party in April 2016, as well as closed four other facilities during the first nine months of 2016.

The following tables set forth the asset impairment charges and exit activity costs incurred by segment during the three and nine months ended September 30, related to the restructuring activities described above (in thousands):

	Three Months Ended   September 30,
	2017							2016
	Inventory write-downs &/or asset impairment recoveries, net		Exit activity costs			Total		Inventory write-downs &/or asset impairment charges		Exit activity costs		Total
Residential Products	$	442	$	566		$	1,008	$	373	$	207	$	580
Industrial & Infrastructure Products	98		(12		)	86		2,429		756		3,185
Renewable Energy & Conservation	266		191			457		—		—		—
Corporate	—		16			16		—		—		—
Total exit activity costs & asset impairments	$	806	$	761		$	1,567	$	2,802	$	963	$	3,765

	Nine Months Ended   September 30,
	2017							2016
	Inventory write-downs &/or asset impairment recoveries, net			Exit activity costs		Total		Inventory write-downs &/or asset impairment charges		Exit activity costs		Total
Residential Products	$	295		$	958	$	1,253	$	1,179	$	677	$	1,856
Industrial & Infrastructure Products	(2,492		)	2,959		467		2,697		2,019		4,716
Renewable Energy & Conservation	266			2,610		2,876		—		—		—
Corporate	—			179		179		—		—		—
Total exit activity costs & asset impairments	$	(1,931	)	$	6,706	$	4,775	$	3,876	$	2,696	$	6,572

The following table provides a summary of where the asset impairments and exit activity costs were recorded in the statement of operations for the three and nine months ended September 30, (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017		2016
Cost of sales	$	860	$	3,433	$	382	$	5,111
Selling, general, and administrative expense	707		332		4,393		1,461
Net asset impairment and exit activity charges	$	1,567	$	3,765	$	4,775	$	6,572

The following table reconciles the beginning and ending liability for exit activity costs relating to the Company’s facility consolidation efforts (in thousands):

	2017			2016
Balance at January 1	$	3,744		$	603
Exit activity costs recognized	6,706			2,696
Cash payments	(9,207		)	(2,182		)
Balance at September 30	$	1,243		$	1,117

As noted above, the Company sold its European industrial manufacturing business to a third party on April 15, 2016 from its Industrial and Infrastructure Products segment. This divestiture did not meet the criteria to be reported as a discontinued operation as it does not represent a strategic shift that has or will have a major effect on the Company’s operations. Similarly, neither the exiting of the Company’s small European residential solar racking business nor its U.S. bar grating product line met the criteria to be reported as a discontinued operation for the year ended December 31, 2016. Therefore, prior period results of continuing operations have not been restated to exclude the impact of the divested and existed businesses' financial results. The pretax loss on sale of the European industrial manufacturing business is presented within other expense (income) in the consolidated statement of operations. The costs related to the exit of the Company's small European residential solar racking business and its U.S. bar grating product line are reflected in the above tables.

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Income Taxes

9 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

INCOME TAXES

INCOME TAXES

The following table summarizes the provision for income taxes for continuing operations (in thousands) for the three and nine months ended September 30, and the applicable effective tax rates:

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2017			2016			2017			2016
Provision for income taxes	$	11,184		$	8,952		$	21,090		$	12,131
Effective tax rate	35.2		%	39.4		%	35.8		%	22.7		%

The effective tax rate for the three months and nine months ended September 30, 2017 was greater than the U.S. federal statutory rate of 35% due to state taxes and $2.2 million of pretax losses generated by the European residential solar racking business for which no tax benefit has been recorded, as such benefit is not expected to be realizable, partially offset by net deductible permanent differences and favorable discrete items. The effective tax rate for the third quarter of 2016 exceeded the U.S. federal statutory rate of 35% due to state taxes and unfavorable discrete items. The effective tax rate for the nine months ended September 30, 2016 was less than the U.S. federal statutory rate of 35% due to deductible permanent differences and favorable discrete items partially offset by state taxes.

The Company recorded a discrete tax benefit of $11.4 million during the nine months ended September 30, 2016 due to the effect of a worthless stock deduction and an associated bad debt deduction of inter-company debt resulting from the sale of its European industrial manufacturing business to a third party. The amount of this benefit was subsequently adjusted and reduced by $4.8 million in the fourth quarter of 2016.

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Earnings per Share

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

EARNINGS PER SHARE

EARNINGS PER SHARE

Basic earnings and diluted weighted-average shares outstanding are as follows for the three and nine months ended September 30, (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017			2016
Numerator:
Income from continuing operations	$	20,619	$	13,786	$	37,789		$	41,427
Loss from discontinued operations	—		—		(405		)	—
Net income available to common shareholders	$	20,619	$	13,786	$	37,384		$	41,427
Denominator for basic earnings per share:
Weighted average shares outstanding	31,703		31,579		31,700			31,493
Denominator for diluted earnings per share:
Weighted average shares outstanding	31,703		31,579		31,700			31,493
Common stock options and restricted stock	507		597		516			512
Weighted average shares and conversions	32,210		32,176		32,216			32,005

The weighted average number of diluted shares does not include potential anti-dilutive common shares aggregating 489,000 and 621,000 for the three months ended September 30, 2017 and 2016, respectively, and 523,000 and 690,000 for the nine months ended September 30, 2017 and 2016, respectively .

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Segment Information

9 Months Ended

Sep. 30, 2017

Segment Reporting Information, Revenue for Reportable Segment [Abstract]

SEGMENT INFORMATION

SEGMENT INFORMATION

The Company is organized into three reportable segments on the basis of the production process and products and services provided by each segment, identified as follows:

(i) Residential Products, which primarily includes roof and foundation ventilation products, mail and parcel storage products, rain dispersion products and roofing accessories;

(ii) Industrial and Infrastructure Products, which primarily includes expanded and perforated metal, expansion joints and structural bearings; and

(iii) Renewable Energy and Conservation, which primarily includes designing, engineering, manufacturing and installation of solar racking systems and greenhouse structures.

When determining the reportable segments, the Company aggregated operating segments based on their similar economic and operating characteristics.

The following table illustrates certain measurements used by management to assess performance of the segments described above for the three and nine months ended September 30, (in thousands):

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2017			2016			2017			2016
Net sales:
Residential Products	$	129,501		$	117,957		$	361,304		$	338,069
Renewable Energy and Conservation	88,135			82,008			202,690			204,648
Industrial and Infrastructure Products	57,162			73,193			165,806			234,590
Less: Intersegment sales	(224		)	(424		)	(994		)	(1,164		)
Net Industrial and Infrastructure Products	56,938			72,769			164,812			233,426
Total consolidated net sales	$	274,574		$	272,734		$	728,806		$	776,143
Income from operations:
Residential Products	$	23,764		$	19,407		$	61,984		$	52,363
Renewable Energy and Conservation	11,549			16,366			18,381			34,969
Industrial and Infrastructure Products	2,554			1,913			5,914			11,429
Unallocated Corporate Expenses	(2,174		)	(11,164		)	(15,977		)	(25,902		)
Total income from operations	$	35,693		$	26,522		$	70,302		$	72,859

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Supplemental Financial Information

9 Months Ended

Sep. 30, 2017

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

SUPPLEMENTAL FINANCIAL INFORMATION

SUPPLEMENTAL FINANCIAL INFORMATION

The following information sets forth the consolidating summary financial statements of the issuer (Gibraltar Industries, Inc.) and guarantors, which guarantee the 6.25% Notes due February 1, 2021, and the non-guarantors. The guarantors are 100% owned domestic subsidiaries of the issuer and the guarantees are full, unconditional, joint and several.

Investments in subsidiaries are accounted for by the parent using the equity method of accounting. The guarantor subsidiaries and non-guarantor subsidiaries are presented on a combined basis. The principal elimination entries eliminate investments in subsidiaries and intercompany balances and transactions.

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF OPERATIONS

THREE MONTHS ENDED SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Total
Net sales	$	—		$	264,448	$	15,514		$	(5,388	)	$	274,574
Cost of sales	—			198,103		12,844			(5,108		)	205,839
Gross profit	—			66,345		2,670			(280		)	68,735
Selling, general, and administrative expense	34			31,003		2,005			—			33,042
(Loss) income from operations	(34		)	35,342		665			(280		)	35,693
Interest expense (income)	3,402			105		(21		)	—			3,486
Other expense	—			100		304			—			404
(Loss) income before taxes	(3,436		)	35,137		382			(280		)	31,803
(Benefit of) provision for income taxes	(1,124		)	12,219		89			—			11,184
Equity in earnings from subsidiaries	23,211			293		—			(23,504		)	—
Net income	$	20,899		$	23,211	$	293		$	(23,784	)	$	20,619

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF OPERATIONS

THREE MONTHS ENDED SEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Total
Net sales	$	—		$	265,657	$	15,799		$	(8,722	)	$	272,734
Cost of sales	—			202,199		11,721			(9,073		)	204,847
Gross profit	—			63,458		4,078			351			67,887
Selling, general, and administrative expense	94			38,505		2,766			—			41,365
(Loss) income from operations	(94		)	24,953		1,312			351			26,522
Interest expense (income)	3,403			241		(19		)	—			3,625
Other expense (income)	230			24		(95		)	—			159
(Loss) income before taxes	(3,727		)	24,688		1,426			351			22,738
(Benefit of) provision for income taxes	(1,416		)	10,804		(436		)	—			8,952
Equity in earnings from subsidiaries	15,746			1,862		—			(17,608		)	—
Net income	$	13,435		$	15,746	$	1,862		$	(17,257	)	$	13,786

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF OPERATIONS

NINE MONTHS ENDED SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
Net sales	$	—		$	700,848		$	37,383		$	(9,425	)	$	728,806
Cost of sales	—			527,389			30,565			(8,963		)	548,991
Gross profit	—			173,459			6,818			(462		)	179,815
Selling, general, and administrative expense	111			101,190			8,212			—			109,513
(Loss) income from operations	(111		)	72,269			(1,394		)	(462		)	70,302
Interest expense (income)	10,207			459			(54		)	—			10,612
Other expense	—			345			466			—			811
(Loss) income before taxes	(10,318		)	71,465			(1,806		)	(462		)	58,879
(Benefit of) provision for income taxes	(3,808		)	24,957			(59		)	—			21,090
(Loss) income from continuing operations	(6,510		)	46,508			(1,747		)	(462		)	37,789
Discontinued operations:
Loss from discontinued operations before taxes	—			(644		)	—			—			(644		)
Benefit of income taxes	—			(239		)	—			—			(239		)
Loss from discontinued operations	—			(405		)	—			—			(405		)
Equity in earnings (loss) from subsidiaries	44,356			(1,747		)	—			(42,609		)	—
Net income (loss)	$	37,846		$	44,356		$	(1,747	)	$	(43,071	)	$	37,384

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF OPERATIONS

NINE MONTHS ENDED SEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Total
Net sales	$	—		$	728,782	$	63,014		$	(15,653	)	$	776,143
Cost of sales	—			551,195		49,436			(15,368		)	585,263
Gross profit	—			177,587		13,578			(285		)	190,880
Selling, general, and administrative expense	14,268			99,622		4,131			—			118,021
(Loss) income from operations	(14,268		)	77,965		9,447			(285		)	72,859
Interest expense (income)	10,207			836		(61		)	—			10,982
Other expense (income)	8,717			465		(863		)	—			8,319
(Loss) income before taxes	(33,192		)	76,664		10,371			(285		)	53,558
(Benefit of) provision for income taxes	(10,898		)	22,189		840			—			12,131
Equity in earnings from subsidiaries	64,006			9,531		—			(73,537		)	—
Net income	$	41,712		$	64,006	$	9,531		$	(73,822	)	$	41,427

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

THREE MONTHS ENDED SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.		Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Eliminations			Total
Net income	$	20,899	$	23,211		$	293	$	(23,784	)	$	20,619
Other comprehensive income (loss):
Foreign currency translation adjustment	—		—			1,581		—			1,581
Adjustment to retirement benefit liability, net of tax	—		(2		)	—		—			(2		)
Adjustment to post employment health care benefit liability, net of tax	—		29			—		—			29
Other comprehensive income	—		27			1,581		—			1,608
Total comprehensive income	$	20,899	$	23,238		$	1,874	$	(23,784	)	$	22,227

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

THREE MONTHS ENDED SEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.		Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Total
Net income	$	13,435	$	15,746	$	1,862		$	(17,257	)	$	13,786
Other comprehensive income (loss):
Foreign currency translation adjustment	—		—		(193		)	—			(193		)
Adjustment to retirement benefit liability, net of tax	—		61		—			—			61
Adjustment to post employment health care benefit liability, net of tax	—		38		—			—			38
Other comprehensive income (loss)	—		99		(193		)	—			(94		)
Total comprehensive income	$	13,435	$	15,845	$	1,669		$	(17,257	)	$	13,692

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

NINE MONTHS ENDED SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
Net income (loss)	$	37,846	$	44,356		$	(1,747	)	$	(43,071	)	$	37,384
Other comprehensive income (loss):
Foreign currency translation adjustment	—		—			3,351			—			3,351
Adjustment to retirement benefit liability, net of tax	—		(8		)	—			—			(8		)
Adjustment to post employment health care benefit liability, net of tax	—		88			—			—			88
Other comprehensive income	—		80			3,351			—			3,431
Total comprehensive income	$	37,846	$	44,436		$	1,604		$	(43,071	)	$	40,815

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

NINE MONTHS ENDED SEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Total
Net income	$	41,712	$	64,006	$	9,531	$	(73,822	)	$	41,427
Other comprehensive income:
Foreign currency translation adjustment	—		—		10,638		—			10,638
Adjustment to retirement benefit liability, net of tax	—		59		—		—			59
Adjustment to post employment health care benefit liability, net of tax	—		114		—		—			114
Other comprehensive income	—		173		10,638		—			10,811
Total comprehensive income	$	41,712	$	64,179	$	20,169	$	(73,822	)	$	52,238

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING BALANCE SHEETS

SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	—		$	182,827		$	25,205		$	—		$	208,032
Accounts receivable, net	—			158,877			7,841			—			166,718
Intercompany balances	(18,097		)	21,351			(3,254		)	—			—
Inventories	—			80,771			4,385			—			85,156
Other current assets	4,036			(32		)	4,191			—			8,195
Total current assets	(14,061		)	443,794			38,368			—			468,101
Property, plant, and equipment, net	—			90,933			3,555			—			94,488
Goodwill	—			298,331			22,762			—			321,093
Acquired intangibles	—			99,060			8,883			—			107,943
Other assets	—			4,672			—			—			4,672
Investment in subsidiaries	730,080			60,844			—			(790,924		)	—
	$	716,019		$	997,634		$	73,568		$	(790,924	)	$	996,297
Liabilities and Shareholders’ Equity
Current liabilities:
Accounts payable	$	—		$	91,499		$	4,682		$	—		$	96,181
Accrued expenses	2,188			79,332			1,744			—			83,264
Billings in excess of cost	—			14,578			3,656						18,234
Current maturities of long-term debt	—			400			—			—			400
Total current liabilities	2,188			185,809			10,082			—			198,079
Long-term debt	208,400			1,025			—			—			209,425
Deferred income taxes	—			35,520			2,642			—			38,162
Other non-current liabilities	—			45,200			—			—			45,200
Shareholders’ equity	505,431			730,080			60,844			(790,924		)	505,431
	$	716,019		$	997,634		$	73,568		$	(790,924	)	$	996,297

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING BALANCE SHEETS

DECEMBER 31, 2016

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	—		$	143,826		$	26,351		$	—		$	170,177
Accounts receivable, net	—			117,526			6,546			—			124,072
Intercompany balances	(615		)	6,152			(5,537		)	—			—
Inventories	—			85,483			4,129			—			89,612
Other current assets	13,783			(10,070		)	3,623			—			7,336
Total current assets	13,168			342,917			35,112			—			391,197
Property, plant, and equipment, net	—			104,642			3,662			—			108,304
Goodwill	—			282,300			21,732			—			304,032
Acquired intangibles	—			101,520			9,270			—			110,790
Other assets	—			3,922			—			—			3,922
Investment in subsidiaries	663,118			58,477			—			(721,595		)	—
	$	676,286		$	893,778		$	69,776		$	(721,595	)	$	918,245
Liabilities and Shareholders’ Equity
Current liabilities:
Accounts payable	$	—		$	66,363		$	3,581		$	—		$	69,944
Accrued expenses	7,369			60,004			3,019			—			70,392
Billings in excess of cost	—			9,301			2,051			—			11,352
Current maturities of long-term debt	—			400			—			—			400
Total current liabilities	7,369			136,068			8,651			—			152,088
Long-term debt	208,037			1,200			—			—			209,237
Deferred income taxes	—			35,354			2,648			—			38,002
Other non-current liabilities	—			58,038			—			—			58,038
Shareholders’ equity	460,880			663,118			58,477			(721,595		)	460,880
	$	676,286		$	893,778		$	69,776		$	(721,595	)	$	918,245

GIBRALTAR INDUSTRIES, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

NINE MONTHS ENDEDSEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations		Total
Cash Flows from Operating Activities
Net cash (used in) provided by operating activities	$	(15,136	)	$	64,702		$	(735	)	$	—	$	48,831
Cash Flows from Investing Activities
Cash paid for acquisitions	—			(18,494		)	—			—		(18,494		)
Net proceeds from sale of property and equipment	—			12,935			—			—		12,935
Purchases of property, plant, and equipment	—			(4,929		)	(223		)	—		(5,152		)
Net cash used in investing activities	—			(10,488		)	(223		)	—		(10,711		)
Cash Flows from Financing Activities
Long-term debt payments	—			(400		)	—			—		(400		)
Purchase of treasury stock at market prices	(1,982		)	—			—			—		(1,982		)
Net proceeds from issuance of common stock	649			—			—			—		649
Intercompany financing	16,469			(14,813		)	(1,656		)	—		—
Net cash provided by (used in) financing activities	15,136			(15,213		)	(1,656		)	—		(1,733		)
Effect of exchange rate changes on cash	—			—			1,468			—		1,468
Net increase (decrease) in cash and cash equivalents	—			39,001			(1,146		)	—		37,855
Cash and cash equivalents at beginning of year	—			143,826			26,351			—		170,177
Cash and cash equivalents at end of period	$	—		$	182,827		$	25,205		$	—	$	208,032

GIBRALTAR INDUSTRIES, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

NINE MONTHS ENDEDSEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations		Total
Cash Flows from Operating Activities
Net cash (used in) provided by operating activities	$	(34,186	)	$	119,790		$	16,582		$	—	$	102,186
Cash Flows from Investing Activities
Cash paid for acquisitions	—			(2,314		)	—			—		(2,314		)
Net proceeds from sale of property and equipment	—			220			29			—		249
Purchases of property, plant, and equipment	—			(7,177		)	(423		)	—		(7,600		)
Net proceeds from sale of business	—			—			8,250			—		8,250
Other, net	—			1,118			—			—		1,118
Net cash (used in) provided by investing activities	—			(8,153		)	7,856			—		(297		)
Cash Flows from Financing Activities
Long-term debt payments	—			(400		)	—			—		(400		)
Payment of debt issuance costs	—			(54		)	—			—		(54		)
Purchase of treasury stock at market prices	(1,178		)	—			—			—		(1,178		)
Net proceeds from issuance of common stock	2,892			—			—			—		2,892
Intercompany financing	32,472			(996		)	(31,476		)	—		—
Net cash provided by (used in) financing activities	34,186			(1,450		)	(31,476		)	—		1,260
Effect of exchange rate changes on cash	—			—			1,055			—		1,055
Net increase (decrease) in cash and cash equivalents	—			110,187			(5,983		)	—		104,204
Cash and cash equivalents at beginning of year	—			39,597			29,261			—		68,858
Cash and cash equivalents at end of period	$	—		$	149,784		$	23,278		$	—	$	173,062

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Recent Accounting Pronouncements (Policies)

9 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Recent Accounting Pronouncements

Recent Accounting Pronouncements Adopted

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2016-09 Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting	The standard simplifies the accounting for share-based payment award transactions including: income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. The provisions of this standard are effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption is permitted.	The Company has adopted all amendments included in this standard under each required transition method.  The Company concluded there were no material changes to prior periods, except for the following: the Company (a) reclassified its prior interim period excess tax benefit for stock compensation of $941,000 on its consolidated statement of cash flows from a financing activity to an operating activity; and (b) recognized a cumulative-effect adjustment of $254,000 as an increase to retained earnings and decrease to additional paid-in capital on the Company's consolidated statement of shareholders' equity as of January 1, 2017 to reflect the change in value for a restricted stock unit liability award as of December 31, 2016, as if the award had been classified as an equity award since its respective grant date. Date of adoption: Q1 2017

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment	The standard eliminates the "Step 2" analysis to determine the amount of impairment realized when a reporting unit's carrying amount exceeds its fair value in its "Step 1" analysis of accounting for impairment of goodwill. The impairment charge would be the amount determined in "Step 1." The provisions of this standard are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for annual and interim goodwill impairment testing dates after January 1, 2017.	The Company has adopted this standard and it did not have any impact on the Company's consolidated financial statements. Date of Adoption: Q1 2017
ASU No. 2017-07 Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	The standard requires an employer to recognize the service cost component of net periodic pension costs and net periodic postretirement benefit costs in the same line item(s) as other compensation costs from services rendered by pertinent employees during the period. Other components of net benefit cost are required to be presented separately from the service cost component and outside a subtotal of income from operations. The provisions of this standard are effective for annual reporting periods beginning after December 15, 2017, including interim periods within those annual periods. Early adoption is permitted as of the beginning of an annual period for which financial statements (interim or annual) have not been issued or made available for issuance.	The Company has adopted this standard and has applied it retrospectively for the presentation of the service cost component, as well as, other components of net periodic pension cost and net periodic postretirement benefit cost in our statement of operations. The adoption decreased selling, general, and administrative expense by $159,000 for the three months ended September 30, 2016 and $479,000 for the nine months ended September 30, 2016, and comparably increased other expense by the same amounts, respectively. This guidance did not have any impact on our balance sheet or our statement of cash flows. Date of Adoption: Q1 2017

Recent Accounting Pronouncements Not Yet Adopted

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2014-09 Revenue from Contracts with Customers (Topic 606) And All Related ASUs	The standard requires an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also requires additional disclosures about the nature, amount, timing, and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and assets recognized from costs incurred to obtain or fulfill a contract. The provisions of the standard, as well as all subsequently issued clarifications to the standard, are effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. The standard can be adopted using either a full retrospective or modified retrospective approach.	The Company currently believes the most significant impact of this standard upon adoption relates to the revenue recognition for custom fabricated products within the Company's Industrial and Infrastructure Products segment. Under this standard, the Company expects to recognize revenue on an over time basis on custom fabricated products in the Industrial and Infrastructure Products segment which is a change from our current revenue recognition policy of point-in-time basis. The Company expects revenue recognition related to the remaining Industrial and Infrastructure Products segment, Residential Products segment and Renewable Energy and Conservation segment to remain substantially unchanged upon adoption of this standard. The Company has identified and is in the process of implementing appropriate changes to the Company's business processes, systems and internal controls to support recognition and disclosure under this standard. The Company currently anticipates adopting the modified retrospective transition method approach. The Company has not yet completed the process of quantifying the effects of any changes that will result from adoption. Planned date of adoption: Q1 2018

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU No. 2016-02 Leases (Topic 842)	The standard requires lessees to recognize most leases as assets and liabilities on the balance sheet, but record expenses on the statement of operations in a manner similar to current accounting. For lessors, the guidance modifies the classification criteria and accounting for sales-type and direct financing leases. The standard also requires additional disclosures about leasing arrangements and requires a modified retrospective transition approach for existing leases, whereby the standard will be applied to the earliest year presented. The provisions of the standard are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted.	The Company is currently evaluating the impact of this standard on the Company's consolidated financial statements and related disclosures, including the impact on the Company's current lease portfolio from both a lessor and lessee perspective. The adoption of this standard will primarily result in an increase in the assets and liabilities on the Company's consolidated balance sheet and related disclosures. Planned date of adoption: Q1 2019
ASU No. 2016-15 Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments	The standard provides guidance on eight specific cash flow issues to reduce diversity in reporting. The provisions of this standard are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted.	The Company is currently evaluating the requirements of this standard and has not yet determined its impact on the Company's consolidated financial statements. Planned date of adoption: Q1 2018
ASU No. 2016-16 Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory	The standard allows an entity to recognize income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. The provisions of this standard are effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. Early adoption is permitted as of the beginning of an annual reporting period for which financial statements (interim or annual) have not been issued or made available for issuance.	The Company is currently evaluating the requirements of this standard and has not yet determined its impact on the Company's consolidated financial statements. Planned date of adoption: Q1 2018

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Accounts Receivable (Tables)

9 Months Ended

Sep. 30, 2017

Receivables [Abstract]

Schedule of Accounts Receivable

Accounts receivable consists of the following (in thousands):

	September 30, 2017			December 31, 2016
Trade accounts receivable	$	104,031		$	81,193
Contract receivables:
Amounts billed	49,866			41,569
Costs in excess of billings	18,374			6,582
Total contract receivables	68,240			48,151
Total accounts receivable	172,271			129,344
Less allowance for doubtful accounts	(5,553		)	(5,272		)
Accounts receivable	$	166,718		$	124,072

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Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Schedule Of Inventories

Inventories consist of the following (in thousands):

	September 30, 2017		December 31, 2016
Raw material	$	41,569	$	41,758
Work-in-process	12,123		12,268
Finished goods	31,464		35,586
Total inventories	$	85,156	$	89,612

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Acquisitions (Tables)

9 Months Ended

Sep. 30, 2017

Business Combinations [Abstract]

Allocation Of Purchase Consideration To The Assets Acquired And Liabilities Assumed

The allocation of the purchase consideration to the fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands):

Cash	$	2,495
Working capital	(1,109		)
Property, plant and equipment	4,702
Acquired intangible assets	6,200
Other assets	23
Goodwill	11,451
Fair value of purchase consideration	$	23,762

The allocation of the purchase consideration to the fair value of the assets acquired and liabilities assumed is as follows as of the date of the acquisition (in thousands):

Cash	$	590
Working capital	(2,071		)
Property, plant and equipment	55
Acquired intangible assets	3,600
Other assets	8
Deferred income taxes	(128		)
Goodwill	16,863
Fair value of purchase consideration	$	18,917

Intangible Assets Acquired

The intangible assets acquired in this acquisition consisted of the following (in thousands):

	Fair Value		Estimated Useful Life
Trademarks	$	3,200	Indefinite
Technology	1,300		15 years
Customer relationships	800		11 years
Backlog	900		0.25 years
Total	$	6,200

The intangible assets acquired in this acquisition consisted of the following (in thousands):

	Fair Value		Estimated Useful Life
Trademarks	$	600	Indefinite
Technology	1,300		10 years
Customer relationships	1,700		7 years
Total	$	3,600

Separately Recognized Transactions

The following table summarizes acquisition-related costs for the three and nine months ended September 30 (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017		2016
Acquisition-related costs	$	31	$	—	$	146	$	31

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Goodwill and Related Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule Of Changes In Carrying Amount Of Goodwill

The changes in the carrying amount of goodwill for the nine months ended September 30, 2017 are as follows (in thousands):

	Residential Products		Industrial and Infrastructure Products		Renewable Energy & Conservation			Total
Balance at December 31, 2016	$	181,285	$	53,884	$	68,863		$	304,032
Acquired goodwill	16,863		—		—			16,863
Adjustments to prior year acquisitions	—		—		(832		)	(832		)
Foreign currency translation	—		432		598			1,030
Balance at September 30, 2017	$	198,148	$	54,316	$	68,629		$	321,093

Schedule Of Acquired Intangible Assets

Acquired intangible assets consist of the following (in thousands):

	September 30, 2017				December 31, 2016
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization		Estimated Life
Indefinite-lived intangible assets:
Trademarks	$	45,153	$	—	$	44,720	$	—	Indefinite
Finite-lived intangible assets:
Trademarks	5,882		2,921		5,808		2,427		5 to 15 Years
Unpatented technology	28,020		11,523		26,720		10,041		5 to 20 Years
Customer relationships	80,719		38,182		78,569		33,585		5 to 17 Years
Non-compete agreements	1,649		854		1,649		623		4 to 10 Years
Backlog	—		—		900		900		0.25 Years
	116,270		53,480		113,646		47,576
Total acquired intangible assets	$	161,423	$	53,480	$	158,366	$	47,576

Schedule of Acquired Intangible Asset Amortization Expense

The following table summarizes the acquired intangible asset amortization expense for the three and nine months ended September 30 (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017		2016
Amortization expense	$	2,208	$	2,159	$	6,600	$	6,541

Schedule Of Amortization Expense

Amortization expense related to acquired intangible assets for the remainder of fiscal 2017 and the next five years thereafter is estimated as follows (in thousands):

2017	$2,157
2018	$8,288
2019	$7,617
2020	$7,105
2021	$6,503
2022	$6,092

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Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2017

Long-term Debt, Unclassified [Abstract]

Schedule Of Long-Term Debt

Long-term debt consists of the following (in thousands):

	September 30, 2017			December 31, 2016
Senior Subordinated 6.25% Notes	$	210,000		$	210,000
Other debt	2,400			2,800
Less unamortized debt issuance costs	(2,575		)	(3,163		)
Total debt	209,825			209,637
Less current maturities	400			400
Total long-term debt	$	209,425		$	209,237

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Related Party Transactions Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2017

Related Party Transactions [Abstract]

Lease Expense for Certain Real Estate Properties Leased

For the three and nine months ended September 30, 2017 and 2016, the Company incurred the following lease expense for these properties (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017		2016
Cost of sales	$	262	$	227	$	787	$	679

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Accumulated Other Comprehensive (Loss) Income (Tables)

9 Months Ended

Sep. 30, 2017

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule Of Components Of Accumulated Other Comprehensive Loss

The cumulative balance of each component of accumulated other comprehensive loss, net of tax, is as follows (in thousands):

	Foreign Currency Translation Adjustment			Minimum Pension Liability Adjustment			Unamortized Post Retirement Health Care Costs			Total Pre-Tax Amount			Tax (Benefit) Expense			Accumulated  Other Comprehensive (Loss) Income
Balance at December 31, 2016	$	(5,848	)	$	197		$	(3,150	)	$	(8,801	)	$	(1,080	)	$	(7,721	)
Minimum pension and post retirement health care plan adjustments	—			(13		)	142			129			49			80
Foreign currency translation adjustment	3,351			—			—			3,351			—			3,351
Balance at September 30, 2017	$	(2,497	)	$	184		$	(3,008	)	$	(5,321	)	$	(1,031	)	$	(4,290	)

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Equity-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2017

Share-based Compensation [Abstract]

Schedule Of Number Of Awards And Weighted Average Grant Date Fair Value

The following table provides the number of stock unit awards granted during the nine months ended September 30, which will convert to shares upon vesting, along with the weighted average grant date fair values:

	2017			2016
Awards	Number of Awards	Weighted Average Grant Date Fair Value		Number of Awards	Weighted Average Grant Date Fair Value
Performance stock units	108,748	$	42.72	—	$	—
Restricted stock units	120,048	$	37.14	139,982	$	25.15
Options	25,000	$	42.35	—	$	—
Deferred stock units	10,170	$	34.42	11,945	$	29.30
Restricted shares	2,034	$	34.42	3,185	$	29.30

Schedule of PSU Conversion

During the 2016 performance period, the participants earned an aggregate of 256,000 PSUs, representing 200% of the targeted

2016 award of 128,000. This award will convert to cash payable in January 2019.

Schedule Of Compensation Expense Recognized From Change In Fair Value And Vesting Of Performance Stock Units

The following table summarizes the compensation expense recognized for the PSUs, which will convert to cash, for the three and nine months ended September 30, (in thousands):

	Three Months Ended  September 30,					Nine Months Ended  September 30,
	2017			2016		2017		2016
PSUs compensation (recovery) expense	$	(405	)	$	4,148	$	1,673	$	7,889

Management Stock Purchase Plan

The following table provides the number of restricted stock units credited to active participant accounts and the payments made with respect to restricted stock units issued under the MSPP during the nine months ended September 30,

	2017		2016
Restricted stock units credited	90,754		192,380
Share-based liabilities paid (in $1000s)	$	2,392	$	2,753

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Exit Activity Costs and Asset Impairments (Tables)

9 Months Ended

Sep. 30, 2017

Restructuring and Related Activities [Abstract]

Summary Of Exit Activity Costs And Asset Impairments

The following table provides a summary of where the asset impairments and exit activity costs were recorded in the statement of operations for the three and nine months ended September 30, (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017		2016
Cost of sales	$	860	$	3,433	$	382	$	5,111
Selling, general, and administrative expense	707		332		4,393		1,461
Net asset impairment and exit activity charges	$	1,567	$	3,765	$	4,775	$	6,572

The following tables set forth the asset impairment charges and exit activity costs incurred by segment during the three and nine months ended September 30, related to the restructuring activities described above (in thousands):

	Three Months Ended   September 30,
	2017							2016
	Inventory write-downs &/or asset impairment recoveries, net		Exit activity costs			Total		Inventory write-downs &/or asset impairment charges		Exit activity costs		Total
Residential Products	$	442	$	566		$	1,008	$	373	$	207	$	580
Industrial & Infrastructure Products	98		(12		)	86		2,429		756		3,185
Renewable Energy & Conservation	266		191			457		—		—		—
Corporate	—		16			16		—		—		—
Total exit activity costs & asset impairments	$	806	$	761		$	1,567	$	2,802	$	963	$	3,765

	Nine Months Ended   September 30,
	2017							2016
	Inventory write-downs &/or asset impairment recoveries, net			Exit activity costs		Total		Inventory write-downs &/or asset impairment charges		Exit activity costs		Total
Residential Products	$	295		$	958	$	1,253	$	1,179	$	677	$	1,856
Industrial & Infrastructure Products	(2,492		)	2,959		467		2,697		2,019		4,716
Renewable Energy & Conservation	266			2,610		2,876		—		—		—
Corporate	—			179		179		—		—		—
Total exit activity costs & asset impairments	$	(1,931	)	$	6,706	$	4,775	$	3,876	$	2,696	$	6,572

Reconciliation Of Liability For Exit Activity Costs Relating To Facility Consolidation Efforts

The following table reconciles the beginning and ending liability for exit activity costs relating to the Company’s facility consolidation efforts (in thousands):

	2017			2016
Balance at January 1	$	3,744		$	603
Exit activity costs recognized	6,706			2,696
Cash payments	(9,207		)	(2,182		)
Balance at September 30	$	1,243		$	1,117

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Income Taxes (Tables)

9 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Summary Of Provision For Income Taxes For Continuing Operations

The following table summarizes the provision for income taxes for continuing operations (in thousands) for the three and nine months ended September 30, and the applicable effective tax rates:

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2017			2016			2017			2016
Provision for income taxes	$	11,184		$	8,952		$	21,090		$	12,131
Effective tax rate	35.2		%	39.4		%	35.8		%	22.7		%

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Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Schedule Of Computation Of Basic And Diluted Loss Per Share

the three and nine months ended September 30, (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2017		2016		2017			2016
Numerator:
Income from continuing operations	$	20,619	$	13,786	$	37,789		$	41,427
Loss from discontinued operations	—		—		(405		)	—
Net income available to common shareholders	$	20,619	$	13,786	$	37,384		$	41,427
Denominator for basic earnings per share:
Weighted average shares outstanding	31,703		31,579		31,700			31,493
Denominator for diluted earnings per share:
Weighted average shares outstanding	31,703		31,579		31,700			31,493
Common stock options and restricted stock	507		597		516			512
Weighted average shares and conversions	32,210		32,176		32,216			32,005

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Segment Information (Tables)

9 Months Ended

Sep. 30, 2017

Segment Reporting Information, Revenue for Reportable Segment [Abstract]

Reconciliation Of Sales To Earnings Before Income Taxes by Segment

The following table illustrates certain measurements used by management to assess performance of the segments described above for the three and nine months ended September 30, (in thousands):

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2017			2016			2017			2016
Net sales:
Residential Products	$	129,501		$	117,957		$	361,304		$	338,069
Renewable Energy and Conservation	88,135			82,008			202,690			204,648
Industrial and Infrastructure Products	57,162			73,193			165,806			234,590
Less: Intersegment sales	(224		)	(424		)	(994		)	(1,164		)
Net Industrial and Infrastructure Products	56,938			72,769			164,812			233,426
Total consolidated net sales	$	274,574		$	272,734		$	728,806		$	776,143
Income from operations:
Residential Products	$	23,764		$	19,407		$	61,984		$	52,363
Renewable Energy and Conservation	11,549			16,366			18,381			34,969
Industrial and Infrastructure Products	2,554			1,913			5,914			11,429
Unallocated Corporate Expenses	(2,174		)	(11,164		)	(15,977		)	(25,902		)
Total income from operations	$	35,693		$	26,522		$	70,302		$	72,859

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Supplemental Financial Information (Tables)

9 Months Ended

Sep. 30, 2017

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Schedule Of Consolidating Statements Of Operations

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF OPERATIONS

THREE MONTHS ENDED SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Total
Net sales	$	—		$	264,448	$	15,514		$	(5,388	)	$	274,574
Cost of sales	—			198,103		12,844			(5,108		)	205,839
Gross profit	—			66,345		2,670			(280		)	68,735
Selling, general, and administrative expense	34			31,003		2,005			—			33,042
(Loss) income from operations	(34		)	35,342		665			(280		)	35,693
Interest expense (income)	3,402			105		(21		)	—			3,486
Other expense	—			100		304			—			404
(Loss) income before taxes	(3,436		)	35,137		382			(280		)	31,803
(Benefit of) provision for income taxes	(1,124		)	12,219		89			—			11,184
Equity in earnings from subsidiaries	23,211			293		—			(23,504		)	—
Net income	$	20,899		$	23,211	$	293		$	(23,784	)	$	20,619

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF OPERATIONS

THREE MONTHS ENDED SEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Total
Net sales	$	—		$	265,657	$	15,799		$	(8,722	)	$	272,734
Cost of sales	—			202,199		11,721			(9,073		)	204,847
Gross profit	—			63,458		4,078			351			67,887
Selling, general, and administrative expense	94			38,505		2,766			—			41,365
(Loss) income from operations	(94		)	24,953		1,312			351			26,522
Interest expense (income)	3,403			241		(19		)	—			3,625
Other expense (income)	230			24		(95		)	—			159
(Loss) income before taxes	(3,727		)	24,688		1,426			351			22,738
(Benefit of) provision for income taxes	(1,416		)	10,804		(436		)	—			8,952
Equity in earnings from subsidiaries	15,746			1,862		—			(17,608		)	—
Net income	$	13,435		$	15,746	$	1,862		$	(17,257	)	$	13,786

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF OPERATIONS

NINE MONTHS ENDED SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
Net sales	$	—		$	700,848		$	37,383		$	(9,425	)	$	728,806
Cost of sales	—			527,389			30,565			(8,963		)	548,991
Gross profit	—			173,459			6,818			(462		)	179,815
Selling, general, and administrative expense	111			101,190			8,212			—			109,513
(Loss) income from operations	(111		)	72,269			(1,394		)	(462		)	70,302
Interest expense (income)	10,207			459			(54		)	—			10,612
Other expense	—			345			466			—			811
(Loss) income before taxes	(10,318		)	71,465			(1,806		)	(462		)	58,879
(Benefit of) provision for income taxes	(3,808		)	24,957			(59		)	—			21,090
(Loss) income from continuing operations	(6,510		)	46,508			(1,747		)	(462		)	37,789
Discontinued operations:
Loss from discontinued operations before taxes	—			(644		)	—			—			(644		)
Benefit of income taxes	—			(239		)	—			—			(239		)
Loss from discontinued operations	—			(405		)	—			—			(405		)
Equity in earnings (loss) from subsidiaries	44,356			(1,747		)	—			(42,609		)	—
Net income (loss)	$	37,846		$	44,356		$	(1,747	)	$	(43,071	)	$	37,384

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF OPERATIONS

NINE MONTHS ENDED SEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Total
Net sales	$	—		$	728,782	$	63,014		$	(15,653	)	$	776,143
Cost of sales	—			551,195		49,436			(15,368		)	585,263
Gross profit	—			177,587		13,578			(285		)	190,880
Selling, general, and administrative expense	14,268			99,622		4,131			—			118,021
(Loss) income from operations	(14,268		)	77,965		9,447			(285		)	72,859
Interest expense (income)	10,207			836		(61		)	—			10,982
Other expense (income)	8,717			465		(863		)	—			8,319
(Loss) income before taxes	(33,192		)	76,664		10,371			(285		)	53,558
(Benefit of) provision for income taxes	(10,898		)	22,189		840			—			12,131
Equity in earnings from subsidiaries	64,006			9,531		—			(73,537		)	—
Net income	$	41,712		$	64,006	$	9,531		$	(73,822	)	$	41,427

Schedule Of Consolidating Statements Of Comprehensive Income

IBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

THREE MONTHS ENDED SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.		Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Eliminations			Total
Net income	$	20,899	$	23,211		$	293	$	(23,784	)	$	20,619
Other comprehensive income (loss):
Foreign currency translation adjustment	—		—			1,581		—			1,581
Adjustment to retirement benefit liability, net of tax	—		(2		)	—		—			(2		)
Adjustment to post employment health care benefit liability, net of tax	—		29			—		—			29
Other comprehensive income	—		27			1,581		—			1,608
Total comprehensive income	$	20,899	$	23,238		$	1,874	$	(23,784	)	$	22,227

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

THREE MONTHS ENDED SEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.		Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Total
Net income	$	13,435	$	15,746	$	1,862		$	(17,257	)	$	13,786
Other comprehensive income (loss):
Foreign currency translation adjustment	—		—		(193		)	—			(193		)
Adjustment to retirement benefit liability, net of tax	—		61		—			—			61
Adjustment to post employment health care benefit liability, net of tax	—		38		—			—			38
Other comprehensive income (loss)	—		99		(193		)	—			(94		)
Total comprehensive income	$	13,435	$	15,845	$	1,669		$	(17,257	)	$	13,692

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

NINE MONTHS ENDED SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
Net income (loss)	$	37,846	$	44,356		$	(1,747	)	$	(43,071	)	$	37,384
Other comprehensive income (loss):
Foreign currency translation adjustment	—		—			3,351			—			3,351
Adjustment to retirement benefit liability, net of tax	—		(8		)	—			—			(8		)
Adjustment to post employment health care benefit liability, net of tax	—		88			—			—			88
Other comprehensive income	—		80			3,351			—			3,431
Total comprehensive income	$	37,846	$	44,436		$	1,604		$	(43,071	)	$	40,815

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

NINE MONTHS ENDED SEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Total
Net income	$	41,712	$	64,006	$	9,531	$	(73,822	)	$	41,427
Other comprehensive income:
Foreign currency translation adjustment	—		—		10,638		—			10,638
Adjustment to retirement benefit liability, net of tax	—		59		—		—			59
Adjustment to post employment health care benefit liability, net of tax	—		114		—		—			114
Other comprehensive income	—		173		10,638		—			10,811
Total comprehensive income	$	41,712	$	64,179	$	20,169	$	(73,822	)	$	52,238

Schedule Of Consolidating Balance Sheets

RALTAR INDUSTRIES, INC.

CONSOLIDATING BALANCE SHEETS

SEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	—		$	182,827		$	25,205		$	—		$	208,032
Accounts receivable, net	—			158,877			7,841			—			166,718
Intercompany balances	(18,097		)	21,351			(3,254		)	—			—
Inventories	—			80,771			4,385			—			85,156
Other current assets	4,036			(32		)	4,191			—			8,195
Total current assets	(14,061		)	443,794			38,368			—			468,101
Property, plant, and equipment, net	—			90,933			3,555			—			94,488
Goodwill	—			298,331			22,762			—			321,093
Acquired intangibles	—			99,060			8,883			—			107,943
Other assets	—			4,672			—			—			4,672
Investment in subsidiaries	730,080			60,844			—			(790,924		)	—
	$	716,019		$	997,634		$	73,568		$	(790,924	)	$	996,297
Liabilities and Shareholders’ Equity
Current liabilities:
Accounts payable	$	—		$	91,499		$	4,682		$	—		$	96,181
Accrued expenses	2,188			79,332			1,744			—			83,264
Billings in excess of cost	—			14,578			3,656						18,234
Current maturities of long-term debt	—			400			—			—			400
Total current liabilities	2,188			185,809			10,082			—			198,079
Long-term debt	208,400			1,025			—			—			209,425
Deferred income taxes	—			35,520			2,642			—			38,162
Other non-current liabilities	—			45,200			—			—			45,200
Shareholders’ equity	505,431			730,080			60,844			(790,924		)	505,431
	$	716,019		$	997,634		$	73,568		$	(790,924	)	$	996,297

GIBRALTAR INDUSTRIES, INC.

CONSOLIDATING BALANCE SHEETS

DECEMBER 31, 2016

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	—		$	143,826		$	26,351		$	—		$	170,177
Accounts receivable, net	—			117,526			6,546			—			124,072
Intercompany balances	(615		)	6,152			(5,537		)	—			—
Inventories	—			85,483			4,129			—			89,612
Other current assets	13,783			(10,070		)	3,623			—			7,336
Total current assets	13,168			342,917			35,112			—			391,197
Property, plant, and equipment, net	—			104,642			3,662			—			108,304
Goodwill	—			282,300			21,732			—			304,032
Acquired intangibles	—			101,520			9,270			—			110,790
Other assets	—			3,922			—			—			3,922
Investment in subsidiaries	663,118			58,477			—			(721,595		)	—
	$	676,286		$	893,778		$	69,776		$	(721,595	)	$	918,245
Liabilities and Shareholders’ Equity
Current liabilities:
Accounts payable	$	—		$	66,363		$	3,581		$	—		$	69,944
Accrued expenses	7,369			60,004			3,019			—			70,392
Billings in excess of cost	—			9,301			2,051			—			11,352
Current maturities of long-term debt	—			400			—			—			400
Total current liabilities	7,369			136,068			8,651			—			152,088
Long-term debt	208,037			1,200			—			—			209,237
Deferred income taxes	—			35,354			2,648			—			38,002
Other non-current liabilities	—			58,038			—			—			58,038
Shareholders’ equity	460,880			663,118			58,477			(721,595		)	460,880
	$	676,286		$	893,778		$	69,776		$	(721,595	)	$	918,245

Schedule Of Condensed Consolidating Statements Of Cash Flows

GIBRALTAR INDUSTRIES, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

NINE MONTHS ENDEDSEPTEMBER 30,2017

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations		Total
Cash Flows from Operating Activities
Net cash (used in) provided by operating activities	$	(15,136	)	$	64,702		$	(735	)	$	—	$	48,831
Cash Flows from Investing Activities
Cash paid for acquisitions	—			(18,494		)	—			—		(18,494		)
Net proceeds from sale of property and equipment	—			12,935			—			—		12,935
Purchases of property, plant, and equipment	—			(4,929		)	(223		)	—		(5,152		)
Net cash used in investing activities	—			(10,488		)	(223		)	—		(10,711		)
Cash Flows from Financing Activities
Long-term debt payments	—			(400		)	—			—		(400		)
Purchase of treasury stock at market prices	(1,982		)	—			—			—		(1,982		)
Net proceeds from issuance of common stock	649			—			—			—		649
Intercompany financing	16,469			(14,813		)	(1,656		)	—		—
Net cash provided by (used in) financing activities	15,136			(15,213		)	(1,656		)	—		(1,733		)
Effect of exchange rate changes on cash	—			—			1,468			—		1,468
Net increase (decrease) in cash and cash equivalents	—			39,001			(1,146		)	—		37,855
Cash and cash equivalents at beginning of year	—			143,826			26,351			—		170,177
Cash and cash equivalents at end of period	$	—		$	182,827		$	25,205		$	—	$	208,032

GIBRALTAR INDUSTRIES, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

NINE MONTHS ENDEDSEPTEMBER 30,2016

(in thousands)

	Gibraltar Industries, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations		Total
Cash Flows from Operating Activities
Net cash (used in) provided by operating activities	$	(34,186	)	$	119,790		$	16,582		$	—	$	102,186
Cash Flows from Investing Activities
Cash paid for acquisitions	—			(2,314		)	—			—		(2,314		)
Net proceeds from sale of property and equipment	—			220			29			—		249
Purchases of property, plant, and equipment	—			(7,177		)	(423		)	—		(7,600		)
Net proceeds from sale of business	—			—			8,250			—		8,250
Other, net	—			1,118			—			—		1,118
Net cash (used in) provided by investing activities	—			(8,153		)	7,856			—		(297		)
Cash Flows from Financing Activities
Long-term debt payments	—			(400		)	—			—		(400		)
Payment of debt issuance costs	—			(54		)	—			—		(54		)
Purchase of treasury stock at market prices	(1,178		)	—			—			—		(1,178		)
Net proceeds from issuance of common stock	2,892			—			—			—		2,892
Intercompany financing	32,472			(996		)	(31,476		)	—		—
Net cash provided by (used in) financing activities	34,186			(1,450		)	(31,476		)	—		1,260
Effect of exchange rate changes on cash	—			—			1,055			—		1,055
Net increase (decrease) in cash and cash equivalents	—			110,187			(5,983		)	—		104,204
Cash and cash equivalents at beginning of year	—			39,597			29,261			—		68,858
Cash and cash equivalents at end of period	$	—		$	149,784		$	23,278		$	—	$	173,062

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Accounts Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Receivables [Abstract]
Trade accounts receivable	$ 104,031	$ 81,193
Contract receivables:
Amounts billed	49,866	41,569
Costs in excess of billings	18,374	6,582
Total contract receivables	68,240	48,151
Total accounts receivable	172,271	129,344
Less allowance for doubtful accounts	(5,553)	(5,272)
Accounts receivable	$ 166,718	$ 124,072

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Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Raw material	$ 41,569	$ 41,758
Work-in-process	12,123	12,268
Finished goods	31,464	35,586
Total inventories	$ 85,156	$ 89,612

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Acquisitions (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2017	Feb. 22, 2017	Oct. 11, 2016
Business Acquisition [Line Items]
Goodwill		$ 304,032	$ 321,093
Package Concierge
Business Acquisition [Line Items]
Aggregate consideration for acquisition	$ 18,917
Goodwill				$ 16,863
Nexus Corporation
Business Acquisition [Line Items]
Aggregate consideration for acquisition		23,762
Goodwill					$ 11,451
Working capital adjustment payable		$ 1,000	$ 167

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Acquisitions (Allocation of Purchase Consideration to the Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Feb. 22, 2017	Dec. 31, 2016	Oct. 11, 2016
Business Acquisition [Line Items]
Goodwill	$ 321,093		$ 304,032
Package Concierge
Business Acquisition [Line Items]
Cash		$ 590
Working capital		(2,071)
Property, plant, and equipment		55
Acquired intangible assets		3,600
Other assets		8
Deferred income taxes		(128)
Goodwill		16,863
Fair value of purchase consideration		$ 18,917
Nexus Corporation
Business Acquisition [Line Items]
Cash				$ 2,495
Working capital				(1,109)
Property, plant, and equipment				4,702
Acquired intangible assets				6,200
Other assets				23
Goodwill				11,451
Fair value of purchase consideration				$ 23,762

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Acquisitions (Schedule of Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	Feb. 22, 2017	Oct. 11, 2016
Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years	15 years
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	7 years	11 years
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life		3 months
Package Concierge
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired	$ 3,600
Package Concierge | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired	1,300
Package Concierge | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired	1,700
Package Concierge | Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired	$ 600
Nexus Corporation
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		$ 6,200
Nexus Corporation | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		1,300
Nexus Corporation | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		800
Nexus Corporation | Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		900
Nexus Corporation | Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		$ 3,200

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Acquisitions (Acquisition-Related Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Business Combinations [Abstract]
Acquisition related costs	$ 31	$ 0	$ 146	$ 31

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Goodwill and Related Intangible Assets (Schedule of Changes in Carrying Amount of Goodwill) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Balance at	$ 304,032
Acquired goodwill	16,863
Adjustments to prior year acquisitions	(832)
Foreign currency translation	1,030
Balance at	321,093
Accumulated impairment losses	235,419	$ 234,490
Residential Products
Goodwill [Roll Forward]
Balance at	181,285
Acquired goodwill	16,863
Adjustments to prior year acquisitions	0
Foreign currency translation	0
Balance at	198,148
Industrial and Infrastructure Products
Goodwill [Roll Forward]
Balance at	53,884
Acquired goodwill	0
Adjustments to prior year acquisitions	0
Foreign currency translation	432
Balance at	54,316
Renewable Energy & Conservation
Goodwill [Roll Forward]
Balance at	68,863
Acquired goodwill	0
Adjustments to prior year acquisitions	(832)
Foreign currency translation	598
Balance at	$ 68,629

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Goodwill and Related Intangible Assets (Schedule of Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	$ 116,270	$ 113,646
Total acquired intangible assets, Gross Carrying Amount	161,423	158,366
Accumulated Amortization, Finite-lived intangible assets	53,480	47,576
Total acquired intangible assets, Accumulated Amortization	53,480	47,576
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	5,882	5,808
Accumulated Amortization, Finite-lived intangible assets	2,921	2,427
Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	28,020	26,720
Accumulated Amortization, Finite-lived intangible assets	11,523	10,041
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	80,719	78,569
Accumulated Amortization, Finite-lived intangible assets	38,182	33,585
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	1,649	1,649
Accumulated Amortization, Finite-lived intangible assets	854	623
Backlog
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	0	900
Accumulated Amortization, Finite-lived intangible assets	$ 0	900
Estimated Life	3 months
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Indefinite-lived intangible assets	$ 45,153	44,720
Accumulated Amortization, Indefinite-lived intangible assets	$ 0	$ 0
Minimum | Trademarks
Finite-Lived Intangible Assets [Line Items]
Estimated Life	5 years
Minimum | Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Estimated Life	5 years
Minimum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Life	5 years
Minimum | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Estimated Life	4 years
Maximum | Trademarks
Finite-Lived Intangible Assets [Line Items]
Estimated Life	15 years
Maximum | Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Estimated Life	20 years
Maximum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Life	17 years
Maximum | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Estimated Life	10 years

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Goodwill and Related Intangible Assets (Schedule of Amortization Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 2,208	$ 2,159	$ 6,600	$ 6,541
2016	2,157		2,157
2017	8,288		8,288
2018	7,617		7,617
2019	7,105		7,105
2020	6,503		6,503
2021	$ 6,092		$ 6,092

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Long-Term Debt (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Mar. 31, 2013
Debt Instrument [Line Items]
Less unamortized debt issuance costs	$ (2,575)	$ (3,163)
Total debt	(209,825)	(209,637)
Less current maturities	400	400
Total long-term debt	209,425	209,237
Senior Subordinated 6.25% Notes
Debt Instrument [Line Items]
Total debt	$ (210,000)	$ (210,000)
Senior Subordinated Notes, interest rate	6.25%	6.25%	6.25%
Other debt
Debt Instrument [Line Items]
Total debt	$ (2,400)	$ (2,800)

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Long-Term Debt (Narrative) (Details) - USD ($)	Dec. 09, 2015	Sep. 30, 2017	Dec. 31, 2016	Mar. 31, 2013	Jan. 31, 2013
Senior Subordinated 6.25% Notes
Debt Instrument [Line Items]
Debt instrument, issued value					$ 210,000,000
Senior Subordinated Notes, interest rate		6.25%	6.25%	6.25%
Revolving Credit Facility | Senior Credit Agreement
Debt Instrument [Line Items]
Revolving credit facility, availability amount		$ 288,784,000
Borrowings outstanding		0	$ 0
Standby Letters of Credit | Senior Credit Agreement
Debt Instrument [Line Items]
Letters of credit issued		11,216,000
Secured Debt | Senior Credit Agreement
Debt Instrument [Line Items]
Debt instrument, issued value		$ 300,000,000
Line of Credit | Senior Credit Agreement
Debt Instrument [Line Items]
Letters of credit issued	$ 500,000,000
Medium-term Notes | Senior Credit Agreement
Debt Instrument [Line Items]
Debt instrument, issued value	$ 200,000,000
Minimum | Line of Credit | Senior Credit Agreement
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.20%
Maximum | Line of Credit | Senior Credit Agreement
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.30%
LIBOR | Minimum | Line of Credit | Senior Credit Agreement
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.25%
LIBOR | Maximum | Line of Credit | Senior Credit Agreement
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.25%

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Related Party Transactions (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) segment	Sep. 30, 2016 USD ($)
Related Party Transaction [Line Items]
Lease expense | $	$ 262	$ 227	$ 787	$ 679
Officer
Related Party Transaction [Line Items]
Number of operating segments | segment			1

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Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI Beginning balance			$ (8,801)
AOCI Ending balance	$ (5,321)		(5,321)
Balance at			(1,080)
Balance at	(1,031)		(1,031)
Balance at			(7,721)
Other comprehensive income (loss), net of tax	1,608	$ (94)	3,431	$ 10,811
Balance at	(4,290)		(4,290)
Accumulated Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI Beginning balance			(5,848)
Other comprehensive income adjustments			3,351
AOCI Ending balance	(2,497)		(2,497)
Other comprehensive income (loss), net of tax			3,351
Accumulated Defined Benefit Plans Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income adjustments			129
Other comprehensive income (loss), tax			49
Other comprehensive income (loss), net of tax			80
Minimum Pension Liability Adjustment | Accumulated Defined Benefit Plans Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI Beginning balance			197
Other comprehensive income adjustments			(13)
AOCI Ending balance	184		184
Postretirement Health Coverage | Accumulated Defined Benefit Plans Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI Beginning balance			(3,150)
Other comprehensive income adjustments			142
AOCI Ending balance	$ (3,008)		$ (3,008)

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Equity-Based Compensation (Schedule of Number of Awards and Weighted Average Grant Date Fair Value) (Details) - $ / shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards (in shares)	108,748	0
Weighted average grant date fair value (in USD per share)	$ 42.72	$ 0.00
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards (in shares)	120,048	139,982
Weighted average grant date fair value (in USD per share)	$ 37.14	$ 25.15
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards (in shares)	25,000	0
Weighted average grant date fair value (in USD per share)	$ 42.35	$ 0.00
Deferred stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards (in shares)	10,170	11,945
Weighted average grant date fair value (in USD per share)	$ 34.42	$ 29.30
Restricted shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards (in shares)	2,034	3,185
Weighted average grant date fair value (in USD per share)	$ 34.42	$ 29.30

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Equity-Based Compensation (Equity Based Awards - Settled in Stock) (Details) - Performance stock units - shares	1 Months Ended		9 Months Ended
	Apr. 30, 2017	Feb. 28, 2017	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units awarded (in shares)			108,748	0
Performance period			1 year
2015 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units awarded that will convert to shares (in shares)	5,266	78,482
Units awarded (in shares)	5,000	20,000
Performance period		3 years

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Equity-Based Compensation (Performance Stock Units - Settled in Cash) (Details) - Performance stock units - shares	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Typical vesting period, in years	3 years
Performance period	1 year
PSUs earned	256,000	128,000
Percentage of target performance stock units earned		200.00%	200.00%
Aggregate shares earned (in shares)			438,000
Targeted award (in shares)			219,000

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Equity-Based Compensation (Schedule of Compensation Expense Recognized from Change in Fair Value and Vesting of Performance Stock Units) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PSUs compensation (recovery) expense	$ (405)	$ 4,148	$ 1,673	$ 7,889

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Equity-Based Compensation (Management Stock Purchase Plan) (Details) - Management Stock Purchase Plan - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based liabilities paid (in $1000s)	$ 2,392,000	$ 2,753,000
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units credited	$ 90,754	$ 192,380

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Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Mar. 31, 2013
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair value of outstanding debt	$ 218,700	$ 219,898
Carrying value of outstanding debt	209,825	209,637
Senior Subordinated 6.25% Notes
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Carrying value of outstanding debt	$ 210,000	$ 210,000
Senior Subordinated Notes, interest rate	6.25%	6.25%	6.25%

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Exit Activity Costs and Asset Impairments (Narrative) (Details) - facility	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Restructuring and Related Activities [Abstract]
Number of facilities closed	3	4
Planned transformation period	5 years

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Exit Activity Costs and Asset Impairments (Summary of Exit Activity Costs and Asset Impairments by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restructuring Cost and Reserve [Line Items]
Inventory write-downs &/or asset impairment recoveries, net	$ 806	$ 2,802	$ (1,931)	$ 3,876
Exit activity costs	761	963	6,706	2,696
Net asset impairment and exit activity charges (gains)	1,567	3,765	4,775	6,572
Residential Products
Restructuring Cost and Reserve [Line Items]
Inventory write-downs &/or asset impairment recoveries, net	442	373	295	1,179
Exit activity costs	566	207	958	677
Net asset impairment and exit activity charges (gains)	1,008	580	1,253	1,856
Industrial and Infrastructure Products
Restructuring Cost and Reserve [Line Items]
Inventory write-downs &/or asset impairment recoveries, net	98	2,429	(2,492)	2,697
Exit activity costs	(12)	756	2,959	2,019
Net asset impairment and exit activity charges (gains)	86	3,185	467	4,716
Renewable Energy & Conservation
Restructuring Cost and Reserve [Line Items]
Inventory write-downs &/or asset impairment recoveries, net	266	0	266	0
Exit activity costs	191	0	2,610	0
Net asset impairment and exit activity charges (gains)	457	0	2,876	0
Corporate
Restructuring Cost and Reserve [Line Items]
Inventory write-downs &/or asset impairment recoveries, net	0	0	0	0
Exit activity costs	16	0	179	0
Net asset impairment and exit activity charges (gains)	$ 16	$ 0	$ 179	$ 0

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Exit Activity Costs and Asset Impairments (Summary of Exit Activity Costs and Asset Impairments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	$ 1,567	$ 3,765	$ 4,775	$ 6,572
Cost of sales
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	860	3,433	382	5,111
Selling, general, and administrative expense
Restructuring Cost and Reserve [Line Items]
Net asset impairment and exit activity charges (gains)	$ 707	$ 332	$ 4,393	$ 1,461

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Exit Activity Costs and Asset Impairments (Reconciles of Liability for Exit Activity Costs Relating to Facility Consolidation Efforts) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restructuring Reserve [Roll Forward]
Beginning balance			$ 3,744	$ 603
Exit activity costs recognized	$ 761	$ 963	6,706	2,696
Cash payments			(9,207)	(2,182)
Ending balance	$ 1,243	$ 1,117	$ 1,243	$ 1,117

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Income Taxes (Provision For Income Taxes For Continuing Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 11,184	$ 8,952	$ 21,090	$ 12,131
Effective tax rate	35.20%	39.40%	35.80%	22.70%

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Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Statutory tax rate, percentage			35.00%	35.00%
Pre-tax loss		$ 2.2
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Tax benefit adjustment for purchase accounting	$ (4.8)
European Industrial Manufacturing Business | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Tax benefit related to divestiture		$ (11.4)

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Earnings per Share (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income	$ 20,619	$ 13,786	$ 37,384	$ 41,427
Weighted average basic shares outstanding (in shares)	31,703,000	31,579,000	31,700,000	31,493,000
Common stock options and restricted stock (in shares)	507,000	597,000	516,000	512,000
Weighted average shares outstanding, diluted (in shares)	32,210,000	32,176,000	32,216,000	32,005,000
Common shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share calculation (in shares)	489,000	621,000	523,000	690,000

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Segment Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) segment	Sep. 30, 2016 USD ($)
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of reportable segments | segment			3
Net sales:	$ 274,574	$ 272,734	$ 728,806	$ 776,143
Income from operations:	68,735	67,887	179,815	190,880
Unallocated Corporate Expenses	(2,174)	(11,164)	(15,977)	(25,902)
Total income from operations	35,693	26,522	70,302	72,859
Residential Products
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	129,501	117,957	361,304	338,069
Income from operations:	23,764	19,407	61,984	52,363
Industrial and Infrastructure Products
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	57,162	73,193	165,806	234,590
Income from operations:	2,554	1,913	5,914	11,429
Renewable Energy & Conservation
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	88,135	82,008	202,690	204,648
Income from operations:	11,549	16,366	18,381	34,969
Intersegment Elimination
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	(224)	(424)	(994)	(1,164)
Intersegment Elimination | Industrial and Infrastructure Products
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	$ 56,938	$ 72,769	$ 164,812	$ 233,426

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Supplemental Financial Information (Narrative) (Details)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Mar. 31, 2013
Schedule Of Supplemental Financial Information [Line Items]
Ownership percentage	100.00%
Senior Subordinated 6.25% Notes
Schedule Of Supplemental Financial Information [Line Items]
Senior Subordinated Notes, interest rate	6.25%	6.25%	6.25%

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Supplemental Financial Information (Schedule of Consolidating Statements of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Schedule Of Supplemental Financial Information [Line Items]
Net Sales	$ 274,574	$ 272,734	$ 728,806	$ 776,143
Cost of sales	205,839	204,847	548,991	585,263
Gross profit	68,735	67,887	179,815	190,880
Selling, general, and administrative expense	33,042	41,365	109,513	118,021
Income from operations	35,693	26,522	70,302	72,859
Interest expense	3,486	3,625	10,612	10,982
Other expense	404	159	811	8,319
Income before taxes	31,803	22,738	58,879	53,558
Provision for income taxes	11,184	8,952	21,090	12,131
Income from continuing operations	20,619	13,786	37,789	41,427
Loss from discontinued operations before taxes	0	0	(644)	0
Benefit of income taxes	0	0	(239)	0
Loss from discontinued operations	0	0	(405)	0
Equity in earnings from subsidiaries	0	0	0	0
Net income	20,619	13,786	37,384	41,427
Reportable Legal Entities | Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Net Sales	264,448	265,657	700,848	728,782
Cost of sales	198,103	202,199	527,389	551,195
Gross profit	66,345	63,458	173,459	177,587
Selling, general, and administrative expense	31,003	38,505	101,190	99,622
Income from operations	35,342	24,953	72,269	77,965
Interest expense	105	241	459	836
Other expense	100	24	345	465
Income before taxes	35,137	24,688	71,465	76,664
Provision for income taxes	12,219	10,804	24,957	22,189
Income from continuing operations			46,508
Loss from discontinued operations before taxes			(644)
Benefit of income taxes			(239)
Loss from discontinued operations			(405)
Equity in earnings from subsidiaries	293	1,862	(1,747)	9,531
Net income	23,211	15,746	44,356	64,006
Reportable Legal Entities | Non-Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Net Sales	15,514	15,799	37,383	63,014
Cost of sales	12,844	11,721	30,565	49,436
Gross profit	2,670	4,078	6,818	13,578
Selling, general, and administrative expense	2,005	2,766	8,212	4,131
Income from operations	665	1,312	(1,394)	9,447
Interest expense	(21)	(19)	(54)	(61)
Other expense	304	(95)	466	(863)
Income before taxes	382	1,426	(1,806)	10,371
Provision for income taxes	89	(436)	(59)	840
Income from continuing operations			(1,747)
Loss from discontinued operations before taxes			0
Benefit of income taxes			0
Loss from discontinued operations			0
Equity in earnings from subsidiaries	0	0	0	0
Net income	293	1,862	(1,747)	9,531
Reportable Legal Entities | Gibraltar Industries, Inc.
Schedule Of Supplemental Financial Information [Line Items]
Net Sales	0	0	0	0
Cost of sales	0	0	0	0
Gross profit	0	0	0	0
Selling, general, and administrative expense	34	94	111	14,268
Income from operations	(34)	(94)	(111)	(14,268)
Interest expense	3,402	3,403	10,207	10,207
Other expense	0	230	0	8,717
Income before taxes	(3,436)	(3,727)	(10,318)	(33,192)
Provision for income taxes	(1,124)	(1,416)	(3,808)	(10,898)
Income from continuing operations			(6,510)
Loss from discontinued operations before taxes			0
Benefit of income taxes			0
Loss from discontinued operations			0
Equity in earnings from subsidiaries	23,211	15,746	44,356	64,006
Net income	20,899	13,435	37,846	41,712
Eliminations
Schedule Of Supplemental Financial Information [Line Items]
Net Sales	(5,388)	(8,722)	(9,425)	(15,653)
Cost of sales	(5,108)	(9,073)	(8,963)	(15,368)
Gross profit	(280)	351	(462)	(285)
Selling, general, and administrative expense	0	0	0	0
Income from operations	(280)	351	(462)	(285)
Interest expense	0	0	0	0
Other expense	0	0	0	0
Income before taxes	(280)	351	(462)	(285)
Provision for income taxes	0	0	0	0
Income from continuing operations			(462)
Loss from discontinued operations before taxes			0
Benefit of income taxes			0
Loss from discontinued operations			0
Equity in earnings from subsidiaries	(23,504)	(17,608)	(42,609)	(73,537)
Net income	$ (23,784)	$ (17,257)	$ (43,071)	$ (73,822)

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Supplemental Financial Information (Schedule of Consolidating Statements of Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Schedule Of Supplemental Financial Information [Line Items]
Net income	$ 20,619	$ 13,786	$ 37,384	$ 41,427
Other comprehensive income (loss):
Foreign currency translation adjustment	1,581	(193)	3,351	10,638
Adjustment to retirement benefit liability, net of tax	(2)	61	(8)	59
Adjustment to post employment health care benefit liability, net of tax	29	38	88	114
Other comprehensive income (loss)	1,608	(94)	3,431	10,811
Total comprehensive income	22,227	13,692	40,815	52,238
Guarantor Subsidiaries
Other comprehensive income (loss):
Foreign currency translation adjustment	0
Adjustment to retirement benefit liability, net of tax	(2)
Adjustment to post employment health care benefit liability, net of tax	29
Other comprehensive income (loss)	27
Total comprehensive income	23,238
Non-Guarantor Subsidiaries
Other comprehensive income (loss):
Foreign currency translation adjustment	1,581
Adjustment to retirement benefit liability, net of tax	0
Adjustment to post employment health care benefit liability, net of tax	0
Other comprehensive income (loss)	1,581
Total comprehensive income	1,874
Gibraltar Industries, Inc.
Other comprehensive income (loss):
Foreign currency translation adjustment	0
Adjustment to retirement benefit liability, net of tax	0
Adjustment to post employment health care benefit liability, net of tax	0
Other comprehensive income (loss)	0
Total comprehensive income	20,899
Reportable Legal Entities | Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Net income	23,211	15,746	44,356	64,006
Other comprehensive income (loss):
Foreign currency translation adjustment		0	0	0
Adjustment to retirement benefit liability, net of tax		61	(8)	59
Adjustment to post employment health care benefit liability, net of tax		38	88	114
Other comprehensive income (loss)		99	80	173
Total comprehensive income		15,845	44,436	64,179
Reportable Legal Entities | Non-Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Net income	293	1,862	(1,747)	9,531
Other comprehensive income (loss):
Foreign currency translation adjustment		(193)	3,351	10,638
Adjustment to retirement benefit liability, net of tax		0	0	0
Adjustment to post employment health care benefit liability, net of tax		0	0	0
Other comprehensive income (loss)		(193)	3,351	10,638
Total comprehensive income		1,669	1,604	20,169
Reportable Legal Entities | Gibraltar Industries, Inc.
Schedule Of Supplemental Financial Information [Line Items]
Net income	20,899	13,435	37,846	41,712
Other comprehensive income (loss):
Foreign currency translation adjustment		0	0	0
Adjustment to retirement benefit liability, net of tax		0	0	0
Adjustment to post employment health care benefit liability, net of tax		0	0	0
Other comprehensive income (loss)		0	0	0
Total comprehensive income		13,435	37,846	41,712
Eliminations
Schedule Of Supplemental Financial Information [Line Items]
Net income	(23,784)	(17,257)	(43,071)	(73,822)
Other comprehensive income (loss):
Foreign currency translation adjustment	0	0	0	0
Adjustment to retirement benefit liability, net of tax	0	0	0	0
Adjustment to post employment health care benefit liability, net of tax	0	0	0	0
Other comprehensive income (loss)	0	0	0	0
Total comprehensive income	$ (23,784)	$ (17,257)	$ (43,071)	$ (73,822)

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Supplemental Financial Information (Schedule of Consolidating Balance Sheets) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Schedule Of Supplemental Financial Information [Line Items]
Cash and cash equivalents	$ 208,032	$ 170,177	$ 173,062	$ 68,858
Accounts receivable, net	166,718	124,072
Intercompany balances	0	0
Inventories	85,156	89,612
Other current assets	8,195	7,336
Total current assets	468,101	391,197
Property, plant, and equipment, net	94,488	108,304
Goodwill	321,093	304,032
Acquired intangibles	107,943	110,790
Other assets	4,672	3,922
Investment in subsidiaries	0	0
Total assets	996,297	918,245
Accounts payable	96,181	69,944
Accrued expenses	83,264	70,392
Billings in excess of cost	18,234	11,352
Current maturities of long-term debt	400	400
Total current liabilities	198,079	152,088
Long-term debt	209,425	209,237
Deferred income taxes	38,162	38,002
Other non-current liabilities	45,200	58,038
Total shareholders’ equity	505,431	460,880
Total liabilities and shareholders' equity	996,297	918,245
Reportable Legal Entities | Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Cash and cash equivalents	182,827	143,826	149,784	39,597
Accounts receivable, net	158,877	117,526
Intercompany balances	21,351	6,152
Inventories	80,771	85,483
Other current assets	(32)	(10,070)
Total current assets	443,794	342,917
Property, plant, and equipment, net	90,933	104,642
Goodwill	298,331	282,300
Acquired intangibles	99,060	101,520
Other assets	4,672	3,922
Investment in subsidiaries	60,844	58,477
Total assets	997,634	893,778
Accounts payable	91,499	66,363
Accrued expenses	79,332	60,004
Billings in excess of cost	14,578	9,301
Current maturities of long-term debt	400	400
Total current liabilities	185,809	136,068
Long-term debt	1,025	1,200
Deferred income taxes	35,520	35,354
Other non-current liabilities	45,200	58,038
Total shareholders’ equity	730,080	663,118
Total liabilities and shareholders' equity	997,634	893,778
Reportable Legal Entities | Non-Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Cash and cash equivalents	25,205	26,351	23,278	29,261
Accounts receivable, net	7,841	6,546
Intercompany balances	(3,254)	(5,537)
Inventories	4,385	4,129
Other current assets	4,191	3,623
Total current assets	38,368	35,112
Property, plant, and equipment, net	3,555	3,662
Goodwill	22,762	21,732
Acquired intangibles	8,883	9,270
Other assets	0	0
Investment in subsidiaries	0	0
Total assets	73,568	69,776
Accounts payable	4,682	3,581
Accrued expenses	1,744	3,019
Billings in excess of cost	3,656	2,051
Current maturities of long-term debt	0	0
Total current liabilities	10,082	8,651
Long-term debt	0	0
Deferred income taxes	2,642	2,648
Other non-current liabilities	0	0
Total shareholders’ equity	60,844	58,477
Total liabilities and shareholders' equity	73,568	69,776
Reportable Legal Entities | Gibraltar Industries, Inc.
Schedule Of Supplemental Financial Information [Line Items]
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0
Intercompany balances	(18,097)	(615)
Inventories	0	0
Other current assets	4,036	13,783
Total current assets	(14,061)	13,168
Property, plant, and equipment, net	0	0
Goodwill	0	0
Acquired intangibles	0	0
Other assets	0	0
Investment in subsidiaries	730,080	663,118
Total assets	716,019	676,286
Accounts payable	0	0
Accrued expenses	2,188	7,369
Billings in excess of cost	0	0
Current maturities of long-term debt	0	0
Total current liabilities	2,188	7,369
Long-term debt	208,400	208,037
Deferred income taxes	0	0
Other non-current liabilities	0	0
Total shareholders’ equity	505,431	460,880
Total liabilities and shareholders' equity	716,019	676,286
Eliminations
Schedule Of Supplemental Financial Information [Line Items]
Cash and cash equivalents	0	0	$ 0	$ 0
Accounts receivable, net	0	0
Intercompany balances	0	0
Inventories	0	0
Other current assets	0	0
Total current assets	0	0
Property, plant, and equipment, net	0	0
Goodwill	0	0
Acquired intangibles	0	0
Other assets	0	0
Investment in subsidiaries	(790,924)	(721,595)
Total assets	(790,924)	(721,595)
Accounts payable	0	0
Accrued expenses	0	0
Billings in excess of cost		0
Current maturities of long-term debt	0	0
Total current liabilities	0	0
Long-term debt	0	0
Deferred income taxes	0	0
Other non-current liabilities	0	0
Total shareholders’ equity	(790,924)	(721,595)
Total liabilities and shareholders' equity	$ (790,924)	$ (721,595)

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Supplemental Financial Information (Schedule of Condensed Consolidating Statements of Cash Flows) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Schedule Of Supplemental Financial Information [Line Items]
Net cash provided by (used in) operating activities	$ 48,831	$ 102,186
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	(18,494)	(2,314)
Net proceeds from sale of property and equipment	12,935	249
Purchases of property, plant, and equipment	(5,152)	(7,600)
Net proceeds from sale of business	0	8,250
Other, net	0	1,118
Net cash used in investing activities	(10,711)	(297)
Cash Flows from Financing Activities
Long-term debt payments	400	400
Purchase of treasury stock at market prices	(1,982)	(1,178)
Net proceeds from issuance of common stock	649	2,892
Payment of debt issuance costs	0	(54)
Intercompany financing	0	0
Net cash used in financing activities	(1,733)	1,260
Effect of exchange rate changes on cash	1,468	1,055
Net increase in cash and cash equivalents	37,855	104,204
Cash and cash equivalents at beginning of year	170,177	68,858
Cash and cash equivalents at end of period	208,032	173,062
Reportable Legal Entities | Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Net cash provided by (used in) operating activities	64,702	119,790
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	(18,494)	(2,314)
Net proceeds from sale of property and equipment	12,935	220
Purchases of property, plant, and equipment	(4,929)	(7,177)
Net proceeds from sale of business		0
Other, net		1,118
Net cash used in investing activities	(10,488)	(8,153)
Cash Flows from Financing Activities
Long-term debt payments	400	400
Purchase of treasury stock at market prices	0	0
Net proceeds from issuance of common stock	0	0
Payment of debt issuance costs		(54)
Intercompany financing	(14,813)	(996)
Net cash used in financing activities	(15,213)	(1,450)
Effect of exchange rate changes on cash	0	0
Net increase in cash and cash equivalents	39,001	110,187
Cash and cash equivalents at beginning of year	143,826	39,597
Cash and cash equivalents at end of period	182,827	149,784
Reportable Legal Entities | Non-Guarantor Subsidiaries
Schedule Of Supplemental Financial Information [Line Items]
Net cash provided by (used in) operating activities	(735)	16,582
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	0	0
Net proceeds from sale of property and equipment	0	29
Purchases of property, plant, and equipment	(223)	(423)
Net proceeds from sale of business		8,250
Other, net		0
Net cash used in investing activities	(223)	7,856
Cash Flows from Financing Activities
Long-term debt payments	0	0
Purchase of treasury stock at market prices	0	0
Net proceeds from issuance of common stock	0	0
Payment of debt issuance costs		0
Intercompany financing	(1,656)	(31,476)
Net cash used in financing activities	(1,656)	(31,476)
Effect of exchange rate changes on cash	1,468	1,055
Net increase in cash and cash equivalents	(1,146)	(5,983)
Cash and cash equivalents at beginning of year	26,351	29,261
Cash and cash equivalents at end of period	25,205	23,278
Reportable Legal Entities | Gibraltar Industries, Inc.
Schedule Of Supplemental Financial Information [Line Items]
Net cash provided by (used in) operating activities	(15,136)	(34,186)
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	0	0
Net proceeds from sale of property and equipment	0	0
Purchases of property, plant, and equipment	0	0
Net proceeds from sale of business		0
Other, net		0
Net cash used in investing activities	0	0
Cash Flows from Financing Activities
Long-term debt payments	0	0
Purchase of treasury stock at market prices	(1,982)	(1,178)
Net proceeds from issuance of common stock	649	2,892
Payment of debt issuance costs		0
Intercompany financing	16,469	32,472
Net cash used in financing activities	15,136	34,186
Effect of exchange rate changes on cash	0	0
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of year	0	0
Cash and cash equivalents at end of period	0	0
Eliminations
Schedule Of Supplemental Financial Information [Line Items]
Net cash provided by (used in) operating activities	0	0
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	0	0
Net proceeds from sale of property and equipment	0	0
Purchases of property, plant, and equipment	0	0
Net proceeds from sale of business		0
Other, net		0
Net cash used in investing activities	0	0
Cash Flows from Financing Activities
Long-term debt payments	0	0
Purchase of treasury stock at market prices	0	0
Net proceeds from issuance of common stock	0	0
Payment of debt issuance costs		0
Intercompany financing	0	0
Net cash used in financing activities	0	0
Effect of exchange rate changes on cash	0	0
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of year	0	0
Cash and cash equivalents at end of period	$ 0	$ 0