Previous editions (1997 and 2004) had a 0.3 perm limit. As shown in Table 1, a Class A vapor retarder will be more resistant to tearing and puncturing than a Class B or C. Thicknesses of vapor ...

"A puncture-resistant, single-layer vapor barrier is the best type," Church says. This is a Class 1 vapor barrier, which is ...

ARDEX Americas introduces ARDEX VR 95 Fast-Track, One-Component Moisture Vapor Retarder, a ready-to-use, one-component, water-based, two-coat system formulated to suppress residual moisture in new ...