retrofit stem wall insulation

We are having a custom home built in cold climate, Zone 6a, with a walkout basement. The slab has 3″ PS foam under a 4″ slab with hydronic heat tubing… We are having a custom home built in cold climate, Zone 6a, with a walkout basement. The slab has 3″ PS foam under a 4″ slab with hydronic heat tubing…Read MoreGreenBuildingAdvisor