CertainTeed Corp. offers Sierra Ridge.

CertainTeed Corp., Valley Forge, Pa., offers Sierra Ridge, a high profile hip and ridge accessory designed to enhance the appearance of any shingle application. An asphalt coating and thick fiberglass mat make the ridge flexible, yet tough, while its pre-folded design makes for easy installation. Also available are Cap-it-al™ hip and ridge shingles for CertainTeed’s line of Celotex products: Presidential TL™, Ambassador Shake™, Presidentail Shake™ and Dimensional Shake®.