Visqueen Vapor Barrier: Waterproof Protection For Buildings

Visqueen vapor barrier is a waterproof plastic sheeting used to prevent moisture from entering or escaping a building structure. It is often used in crawl spaces, attics, and basements to protect against moisture-related problems such as mold, mildew, and rot. Visqueen is available in both 6-mil and 10-mil thicknesses, with 6-mil being the more common and affordable option. It can be installed over insulation or directly on the subfloor, and should be overlapped by at least 6 inches to ensure a tight seal.