We pour USG Levelrock cementitious flooring in single family owned homes to provide a perfect floor for radiant heating. The thermal mass and strength is better than any other alternative. The cement floor holds the heat longer and more efficiently than other grooved subfloor types of radiant heating systems. The fact remains that installing radiant tubing within a concrete slab is probably the easiest, most cost effective, and highest performance application of the science. The thermal benefits are unsurpassed.