Firestone Thru-wall Flashing SA Membrane – 18″ x 50′ Roll W56TWRA018
W56twra018~ Firestone Enverge Air & Vapor Barrier Systems provides an. flashing tape can also be used to seal penetrations. Enverge Air and Vapor Barrier is an asphalt-based, self-sealing wall barrier that provides energy savings and contributes to better air quality for building occupants.
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