This revolutionary new membrane by Schluter-Systems provides a thermal break that can reduce the warm-up time of a heating system by up to 70% while still providing the uncoupling and ease of installation provided by the original DITRA-HEAT membranes. These thin 5/16" mats are designed with the same stud structure as the original DITRA-HEAT Membrane, allowing cables to fit snuggly into the mat for a quicker installation and lower profile floor than when installing traditional DITRA Uncoupling Membranes and/or insulation layers such as cork with heating mats cables. Simply install your cable of choice between the studs of the mat at the desired spacing the manufacturer's instructions, then thin-set and tile over the membrane.