basement/garage under slab insulation?

working a build with basement and garage in cz-6.i see a lot of references to under-slab insulation,and it’s obvious that applies to slab-on-grade builds,but not obvious if those same principles… working a build with basement and garage in cz-6.i see a lot of references to under-slab insulation,and it’s obvious that applies to slab-on-grade builds,but not obvious if those same principles…Read MoreGreenBuildingAdvisor