Acrylic air barrier

Wall Guardian FW-100A, a liquid-applied, fibered acrylic air barrier that likewise functions as water/weather barrier and vapor retarder, exhibits an air leakage rate of 0.0004 cfm/ft.2 @ 1.57 psf—well below the ASTM E2357, Standard Test Method for Determining Air Leakage of Air Barrier Assemblies threshold.

Wall Guardian FW-100A air barrier can be applied in a single coat and offers what Kemper System contends is one of the lowest installed-cost air barrier systems in the U.S.

The engineered system is designed to resist air and water infiltration, saving energy and preventing moisture build-up that can lead to mildew and mold. Compared to house wraps and mechanically fastened weather barriers, product engineers note, Wall Guardian FW-100A can be quickly applied to building material surfaces with a heavy-duty sprayer, roller or brush. It offers unified substrate protection, even on curved or other unconventionally shaped walls. As a water-based coating, it is a low VOC product and Class A fire rated.

In addition to Wall Guardian FW-100A, the company also offers related air barrier component products through its STS Coatings line: GreatSeal LT-100 polyether Liquid Tape for board-to-board joints, windows, doors, masonry, and roof flashings, plus UT-40 Universal Tape for quickly sealing cracks, transitions, penetrations and seams in exterior substrate and insulation board. Kemper System America Inc., West Seneca, N.Y., 800/541-5455,