Quanex Building Products

Acquires HL Plastics

June 16, 2015

Exhibit 99.1

Safe Harbor

1

Statements made during this presentation that use the words “estimated,” “expect,” “could,” “should,”

“believe,” “will,” “might,” or similar words reflecting future expectations or beliefs are forward-looking

statements. The forward-looking statements include, but are not limited to, references to synergies derived

from acquisitions, future operating results of Quanex, the financial condition of Quanex, future uses of cash,

expectations relating to capital and other expenditures, expenses and tax rates, expectations relating to the

company’s industry, and the company’s future growth. The statements made during this presentation are

based on current expectations. Actual results or events may differ materially from those described during

this presentation. Factors that could impact future results may include, without limitation, the effect of both

domestic and global economic conditions, the impact of competitive products and pricing, the availability

and cost of raw materials, and customer demand, among others. For a more complete discussion of factors

that may affect the company’s future performance, please refer to the company’s 10-K filing on December

12, 2014, under the Securities Exchange Act of 1934 (“Exchange Act”), in particular the section titled,

“Private Securities Litigation Reform Act” contained therein.

2

Transaction Overview

Quanex has acquired HL Plastics for £95M ($149M)

An excellent strategic fit, adding:

•

A

great

business

–

Fastest

growing

vinyl

extruder

in

the

UK

•

In

an

attractive

market

–

Higher

end

and

lower

complexity

than

US

•

At

a

good

time

–

Early

in

the

UK

housing/window

recovery

Expected to be accretive to EPS, EBITDA margins and ROIC

•

2016 EPS accretion estimated between $0.20-$0.25 per share

•

EBITDA margin (18%) delivers on Quanex objective of improving total company

margin towards 15% target

•

Expected to deliver IRR well in excess of WACC

Adds $25M-$30M to mid-cycle EBITDA guidance

Funded with cash and Quanex’s existing $150M credit facility

Pro forma 4/30/15 leverage of 1.5x total debt/EBITDA at close

Note: HL Plastics figures converted to USD at 1.57 USD / GBP

Note

on

Non-GAAP

Financial

Measures:

EBITDA

(defined

as

net

income

or

loss

before

interest,

taxes,

depreciation

and

amortization

and

other,

net,

as

described

in

Quanex’s

filings

with

the

Securities and Exchange Commission) is a non-GAAP financial measure that Quanex's management uses to measure its operational performance and assist with financial decision-making.

EBITDA

is

a

key

metric

used

by

management

in

determining

the

value

of

annual

incentive

awards

for

its

employees.

Quanex

believes

this

non-GAAP

measure

provides

a

consistent

basis

for

comparison between periods, and will assist investors in understanding our financial performance when comparing our results to other investment opportunities. EBITDA may not be the same as

that used by other companies.  While the Company considers EBITDA to be an important measure of operating performance, the company does not intend for this information to be considered in

isolation or as a substitute for net income or other measures prepared in accordance with US GAAP.  Due to the high variability and difficulty in predicting certain items that affect GAAP net

income (including in respect of the impact of HL Plastics), information reconciling forward-looking EBITDA as presented to GAAP financial measures is unavailable to Quanex without

unreasonable effort.

ROIC (or Return on Invested Capital), a financial measure used to quantify the returns Quanex earns on its invested capital, and IRR (or Internal Rate of Return), a metric

that measures the net present value of all cash flows from a capital project or investment (both capital deployed and after tax cash flows received), are also non-GAAP financial

measures.

Quanex

believes

ROIC

and

IRR

are

meaningful

indicators

of

performance

and

useful

metrics

for

investors

and

financial

analysts.

Quanex’s

calculations

of

ROIC

and

IRR

may

not

be

comparable

to

similarly

titled

definitions

used

by

other

companies

and

are

not

substitutes

for

financial

information

prepared

in

accordance

with

GAAP.

3

Attractive Opportunity Consistent with Strategy

Clear fit with Quanex’s

core businesses

Complementary technology and capabilities

Best-in-class manufacturing operations

Outstanding management team and employee base

Strong, stand-alone platform requiring minimal operational integration

Fastest growing vinyl window profile extruder in attractive U.K. market

Strong margins and free cash flow

Platform for future growth in Europe

HL Plastics acquisition is consistent with Quanex’s

strategic objectives of pursuing M&A

opportunities that provide market leadership, superior technology and attractive financial returns

4

HL Plastics Company Overview

Note: HL Plastics figures converted to USD at 1.57 USD / GBP

Market leader and fastest growing vinyl window / door

profile extruder in the UK

Goes to market under Liniar brand name

Headquartered in Denby, UK

Employees: 420

Trailing twelve months revenue of £64M ($101M) and

EBITDA of £12M ($18M)

2012 –

2014 revenue growth of 50%

State-of-the-art manufacturing capabilities with ample

capacity

Superior technology with most energy efficient profile

system in the UK

Diverse customer base across UK and Ireland

Strong and experienced management team

Outstanding, stand-alone platform

Revenue by Geography (2014)

Revenue by Product (2014)

Verandahs

and Decking

Bi-fold and Patio Doors

Conservatory Roof

Systems

Windows

Windows

Verandahs and Decking

Bi-fold and Patio

Conservatory Roof Systems

Wegoma

Vintage

78%

8%

6%

3%

3%

2%

U.K.

Rest of Europe

Other

95%

4%

<1%

5

HL Plastics Product Review

Leading Liniar

brand with co-branding opportunity for components

Verandahs

and Decking

Bi-fold and Patio Doors

Conservatory Roof Systems

Wegoma

Vintage

Windows

PVCu

based products in this category provide an alternative to

more traditional wood based products whilst also providing

products with a recycled content base

One of the first bespoke bi-fold doors into the market providing a

number of product variations

Liniar’s

own proprietary conservatory roof system and other

product sales

Provides specialist machines into the window fabrication market

Provides niche window manufacturing and product development

Liniar

PVCu

windows are the most technically advanced in the

market and designed in-house to meet the highest energy

efficiency and safety standards

6

U.K. Vinyl Profiles Market Overview

Favorable UK market dynamics

Source:

D&G

Consulting

–

Autumn

/Winter

2014

Historical UK Housing Starts

(MM’s)

Median: 197

UK Vinyl Profiles Production

Source: UK Department for Communities and Local Government

(In Tonnes)

0

50,000

100,000

150,000

200,000

250,000

300,000

350,000

Windows

Other

0

50

100

150

200

250

300

Fragmented UK window and door market

•

~1/3 size of N. American mkt

•

2,000+ fabricators is same as N. American mkt

Disciplined competitive landscape

House system driven market

•

Windows marketed utilizing the brand of the

extrusions (i.e. Liniar brand)

•

Efficient manufacturing model

HL ~200 shapes

Compared to ~2,000 for Quanex in US

•

Streamlined product offering

~60 systems available in total by all UK extruders

Quanex

alone in US has 2X number of systems

Similar to the US, demand is driven by new

construction and R&R, but much more heavily

weighted to replacement

UK construction market is at attractive point of

cycle recovery

•

Housing starts grew 25% in 2014

7

Thank you