Shed Style Ridge – If top of sheet not seen from below, put aluminum tape on upper edge of poly. U-Profile used if visible from below. For flashing. See Ridge Flashing. We offer 3″ & 6″x100′ – Adhesive Roll Flashing (shown below) with Butyl Adhesive (facing down) and aluminum foil on opposite surface. – 3″ Flashing Tape only $25
Detail similar for purlin or rafter style framing.