WARRANTY

We sell weathertightness warranties to our customers for protection from leaks in our roofing systems related to weather. These warranties generally range from 2 years to 20 years. We sell two types of warranties, standard and Single Source™, and three grades of coverage for each. The type and grade of coverage determines the price to the customer. For standard warranties, our responsibility for leaks in a roofing system begins after 24 consecutive leak-free months. For Single Source™ warranties, the roofing system must pass our inspection before warranty coverage will be issued. Inspections are typically performed at three stages of the roofing project: (i) at the project start-up; (ii) at the project mid-point; and (iii) at the project completion. These inspections are included in the cost of the warranty. If the project requires or the customer requests additional inspections, those inspections are billed to the customer. Upon the sale of a warranty, we record the resulting revenue as deferred revenue, which is included in other accrued expenses on our consolidated balance sheets.

The following table represents the rollforward of our accrued warranty obligation and deferred warranty revenue activity for the fiscal nine months ended July 30, 2017 and July 31, 2016 (in thousands):



	Fiscal Nine Months Ended
	July 30, 2017			July 31, 2016
Beginning balance	$	27,200		$	25,669
Warranties sold	1,654			2,606
Revenue recognized	(1,585		)	(2,415		)
Ending balance	$	27,269		$	25,860