Assertion: pan's surface | /r/HasProperty | durable waterproof material
Facets:
Source sentences:
text: the pan flashing surface is a durable waterproof material that provides a continuous water barrier without holes, tears or wrinkles that could retain water in the opening; the pan flashing has a back dam or positive slope to direct water to the outside of the wall; the pan flashing has end dams at the sides to prevent water from moving laterally into the wall; the pan flashing laps over the drainage plane beneath the opening.