Roof Valley For Multiwall Polycarbonate Sheet

Roof Valley – We do not provide metal flashing. See Flashing Intro.  We do offer 3″ & 6″ x 100′ – 15 mil Adhesive Roll Flashing (shown below) that has Butyl Adhesive (facing down) and aluminum foil on the opposite surface. When using Sikaflex 295 UV read Sikaflex instructions on the tube.

 Sealant Usage

Screws with Base & Cap        Screw counting screws used in body of sheet and perimeter.
See 8 – 25mm Polycarb some are 20 Year – Lexan Thermoclear is clearly the industry leader


Polycarbonate Greenhouse and Sunroom Building Supplies