WARMLYYOURS
RADIANT FLOOR HEATING INSULATING UNDERLAYMENT
ThermalSheet is a synthetic cork underlayment that comes in 2' by 3' sheets. It is installed on top of a subfloor and below a heating element. It is recommended when installing an electric floor heating system over a concrete slab to prevent heat loss. By creating a thermal break, the heat is prevented from sinking into the concrete, and more heat radiates into the floor covering and room. In addition to preventing unnecessary heat loss, ThermalSheet offers some additional sound-dampening benefits and double the crack isolation benefits when compared to cork. The product is about 25 times lighter than traditional backer board and is less than a quarter inch thick, so it won't significantly increase floor height, the company says.
