Chemelex NuHeat AC0105 Uncoupling Membrane 161 Sq Ft Roll (39" x 49.5') NUMEM161 Non-Woven Polypropylene Heating Pad, Waterproof Anti-Fracture Floor Underlayment for Heating Systems

The Nuheat NUMEM161 membrane is an underlayment and tile decoupling system designed to work with nVent Nuheat electric underfloor heating cables. It provides decoupling, crack isolation, and waterproofing while helping to prevent tile cracking and substrate movement. When used with Nuheat heating cables and a thermostat, it creates a reliable and energy-efficient underfloor heating system. This infloor decoupling layer is easy to install and eliminates the need for a second layer of plywood or cement board in most tile installations. It ensures even heat distribution from the floor and is optimized for use with the rebranded Chemelex heating system. The Chemelex Nuheat mat forms a flexible base bonded to the subfloor with thin mortar adhesive, supporting the tile installation above and absorbing substrate movement. It is effective at neutralizing stress, delamination, and lateral stress transfer to tile surfaces and tile subfloors. Compatible with ceramic tile, porcelain tile, vinyl tile, cement tile, granite tile, marble tile, travertine tile, slate tile, limestone tile, sandstone tile, onyx tile, quartzite tile, mosaic tile, glass tile, concrete block, linoleum tile, carpet tile, vinyl flooring, and stone flooring. Suitable for remodeling applications, bathroom tiles, kitchen tiles, and shower tiles. Rated for a maximum ambient temperature of 194°F (194.0°C), it works in wet areas such as showers, steam rooms, kitchens, laundry rooms, and basements. This crack-resistant membrane (heated underlayment) achieves a "high-performance" rating under ANSI A118.12 and an "extra heavy-duty" rating under ASTM C627 for high-traffic commercial use. At 1/4 inch thick, it minimizes the finished floor height while providing a professional, seamless result. Its polypropylene layer forms channels to securely embed Nuheat cable and acts as a vapor management solution, allowing moisture to escape. Compatible with thin mortars and subfloors, including plywood, OSB, concrete, gypsum, and cement board.