6' width 40 Mil Waterproofing Membrane for installation under 'thick bed' custom ceramic tile and stone installations-showers, baths, fountains, roof decks, terraces, exterior stairs & walkways.Easily formed to fit any dimension or drain location. Durable and long lasting. Can be seamed with Compotite Weld-Tite Flexible Vinyl Cement for larger applications. Inside and Outside Corners available for ease of installation.