Quad Flash - Liquid Applied Flashing Membrane is a gun grade waterproofing sealant compound designed for use in rough openings of structural walls. Quad Flash allows for same day installation of windows, doors and other wall assembly components and offers a strong bond to primary window, door and wall sheathing materials. Quad Flash will stick to damp or dry surfaces and offers superior UV resistance. It can be applied in cold weather as low as 35°F and reaches full cure in as little as 4-6 hours depending on temperature and humidity.