Can I install WarmTouch® system directly over a concrete slab?
Yes, with limitations. Concrete will absorb a lot of the heat from the floor-warming system and will reduce the amount of heat that penetrates the flooring surface, especially in cooler climates. The amount of heat loss will depend on many factors: the thickness of the concrete, the subgrade below the slab, the moisture content, the outside temperature, the quality of windows and doors, the R-Value and placement of insulation, etc. DK recommends installing insulation (in accordance with TCA Guidelines) such as a plywood subfloor or 1/2″ cork underlayment over the slab to reduce heat loss, improves efficiency, and heat the surface more quickly. *The TCA Handbook for Ceramic Tile Installation provides specification writers, architects, contractors and installers industry-consensus detailed drawings and installation specification guidelines for 94 tile installation methods. It also references American National Standards Institute (ANSI) standards and American Society for Testing and Mater
