Base Cap Freestanding Ridge Multiwall Polycarbonate

Freestanding Ridge: If top of sheet not seen from below, put aluminum tape on upper edge of poly.  U-Profile used if visible from below.  We do not provide flashing, see Flashing Intro.  We do offer Adhesive Roll Flashing (below) Butyl Adhesive faces down aluminum foil up.  Note: Horizontal purlin type framing shown, rafter framing similar.

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