Posted on December 12, 2011 by Scott Gibson
Tile can contribute thermal massHeavy, high-heat-capacity material that can absorb and store a significant amount of heat; used in passive solar heating to keep the house warm at night.
to a passive solar house, and to Christa Campbell it would make a more appealing finish floor than concrete.
Although tile can be placed directly over a concrete slab, products such as Schluter’s Ditra are designed to separate, or “uncouple,” the tile from any potential movement in the substrate and protect the tile and grout from cracking.
The question for Campbell is whether using Ditra offsets some of the thermal mass gains in a passive-solar design.