CertainTeed DIAMONDDECK™ Roofing underlayment

High Performance Synthetic Roofing Underlayment

CertainTeed’s DiamondDeckTM
High Performance Synthetic Underlayment is manufactured to provide best-in-class performance in terms of both weather protection and contractor safety .

DiamondDeck is a synthetic, scrim-reinforced, water-resistant underlayment that can be used beneath shingle, shake, metal or slate roofing.