#8 x 2-1/2" Simpson Strong-Tie DWP T20 Trim Head Wood Screw - 305 Stainless Steel, Tan 03, Pkg. 1,750 Large Diameter Tapcons This Simpson Underlayment/Backerboard Attachment features

This Simpson Underlayment/Backerboard Attachment features a limited lifetime warranty (see manufacturer for specific details on warranty)

these screws provide long-lasting protection in outdoor environments

The #7 Roofjack Round Silicone Pipe Flashing Boot is the ultimate solution for sealing pipe penetrations on metal roofs

More Strength

Installation Overview:

#8 x 2-1/2" Simpson Strong-Tie DWP T20 Trim Head Wood Screw - 305 Stainless Steel, Tan 03, Pkg. 1,750 Large Diameter Tapcons This Simpson Underlayment/Backerboard Attachment featuresThe Simpson Strong Tie Deck Drive DWP Trim Head Wood SS Screw is built for outdoor projects that demand long lasting performance and a clean finish. Made from 305 stainless steel for reliable corrosion resistance, its the go to fastener for decks, docks, fences, and other exterior wood applications. Engineered for efficiency, this screw features a sharp point and unique box thread design that drive smoothly into wood, engineered lumber, and polymer