AIR-SHIELD BUTYL FLASHING is a primerless, composite membrane that is comprised of a black woven polyethylene facer and easy-to-release kraft paper release liner. The product is designed for extreme cold applications down to 10° F (-12° C). It can be used as a flashing for rough openings, windows, detailing, and as a transition membrane. This material is an air, vapor, and liquid moisture barrier.
