@Foamdome It would depend on your location whether this would be a good idea. I'm in the Midwest USA, and due to our seasonal temperature extremes, focusing on an insulating sheath is the best bet. Internal thermal mass, such as having a mass heater, within that sheath is fine, particularly if it collects passive solar through South-facing windows. Thermal mass on the South wall might work as a trombe wall, though.
Posts made by EarthSoul
RE: Hybrid earthbag/aircrete structure