Polycarbonate Roofing Screws with Neoprene Washer, 50 pcs

Roofing screws with 1 in neoprene washers for polycarbonate. Completely waterproof and anti-corrosion treated, they're ideal for outdoor wood projects. Each screw includes a sealing dome washer to prevent moisture penetration. The 2-inch length provides optimal holding power, and with 50 pieces per package, you'll have plenty for your woodworking needs. One screw every 2 ft, about 15 per 4x8 sheet. Pack of 50.

Goes together with

• Any 8 mm twin wall sheet, roughly 15 screws per 4 ft sheet, so one pack covers three or four.
• Snap and H profiles, the profile is screwed to the rafter before the sheet goes on.
• Aluminum sealing bar on long open spans that catch wind.

The washer seals the hole and lets the sheet move with temperature, which is why ordinary screws crack polycarbonate. Tightening torque and hole sizes are in the installation manual.