Two rolls of Heated Floor Uncoupling Membrane Underlayment 3.3 ft x 30 ft ? 108 sq ft and a roll of Waterproof Membrane 3.3 ft. x 30 ft. We are a proud USA Seller, based in California. We believe your home improvement project deserves the best. DIY, handyman, or professional contractor. This professional grade building material is made of polypropylene composite. Use this uncoupling membrane for heated floors when installed with a temperature zone electric floor heating cable and thermostat. It provides supreme interior floor warming application. Our polyethylene composite waterproof membrane provides supreme water resistance to prevent water and moisture penetration. Apply it to your backer board, cement, sheet rock, drywall, or greenboard on any bath walls, shower surround, sauna ceiling, floor, shower pan, steam room, stone or wet wall tiles. This tile underlayment membrane has an easy snap grid that allows heated cable to easily snap into place, while increasing heat retention. The underside anchoring fleece allows direct application on various surfaces with any unmodified thin set mortar. Super thick, strong, and durable this 0.25” thick membrane is designed to work with heated floor cables to create warm tile floors. It also provides sound reduction and control, a thermal break, and vapor barrier. Our heated dimple uncoupling membrane can be used with any thinset mortar. The professional-grade polyethylene grid layer and anchoring fleece underside can easily be laid on top of concrete, wood, OSB, backer board, cement or cement board, or gypsum. For use in your bath, shower, sauna, steam room, master bath, hallways, or anywhere you want to lay stone or tiles. We hold all of our products to the same high standard as any other American manufacturer. This uncoupling and waterproofing membrane with an integrated bonding fleece roll is made with new, virgin polyethylene synthetic polymer. This high strength material provides strong adhesion.