Back Surfacing

Fine material applied to the back of shingles to prevent them from sticking...

Base Flashing

The part of the flashing attached to the deck to direct water onto the roof...

Base-ply sheet

A rolled and folded material of product intended to be the base or middle ply in a residential self-adhering roll roofing...


Bubbles that show up on the surface of an asphalt roof after it has been installed.


A method of redoing a roof with metric-size shingles.