Clay-Tite bentonite waterproofing membrane is a dual-layer waterproofing membrane made of virgin high-density polyethylene (HDPE) , sodium bentonite, and a protective layer consisting of a non-woven polypropylene. Clay-Tite can be used in both vertical and horizontal applications. It self-seals under hydrostatic environments and can be installed in all weather conditions on green or damp surfaces.Contact: W.R. Meadows, 800.342.5976; wrmeadows.com