Features Polyethylene membrane roll designed for waterproofing and vapor control Made with polypropylene fabric on both sides used for waterproofing and crack isolation up to 1/8" (3 mm) For interior/exterior use in both residential and commercial applications Recommended for use with polymer-modified mortars Low perm rating per ASTM E96, Method E for vapor protection in shower, wet areas and steam rooms Membrane has a ready-to-tile surface 39.4" x 32.8' = 108 sq. ft. Roll (1 m x 10 m = 10 m² Roll) 39.4" x 98.4' = 323 sq. ft. Roll (1 m x 30 m = 30 m² Roll) Details Mapeguard WP 200 is a sheet membrane that provides waterproofing and crack isolation up to 1/8". With a low per rating, Mapeguard WP 200 works in wet areas such as showers and steam rooms. WP 200 is equipped with a laminated fabric webbing to anchor the membrane to the substrate and tiles to the membrane using the bonded thin-set method with recommended, polymer-modified mortars.