Driwall Membrane 40-mil self-adhering flashing and waterproofing membrane provides an air and vapor barrier for full wall or flashing applications in masonry construction. The highly adhesive membrane resists punctures and tears and is flexible and easy to handle at low temperatures, down to -20° F. Keene Building Products. 877-514-5336. www.keenebuilding.com [WOC Booth N1462]