Hip Flashing Multiwall Polycarbonate Sheet – If top of the polycarb sheet can not be seen from below, put aluminum tape on upper edge of polycarbonate. Aluminum U-Profile can be used if visible from below. We do not provide metal flashing. See Ridge 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.
See 8-25mm Polycarb, some 20 year