Overlap Detail Base Cap Install System

Overlap Detail Base Cap Install System

overlap detail

Push 3/4″ backer rod between upper and lower sheets of poly. Use polyethylene backer rod from Best Materials and silicone, for seal. Always lay initial bead of sealant and cap with same sealant after 72 hours.

Screws with Base & Cap        Screw counting screws used in body of sheet and perimeter.

See 8 – 25mm Polycarb some are 20 Yr Warranty – Lexan Thermoclear is clearly the industry leader

Polycarbonate Greenhouse and Sunroom Building Supplies