Hello All
I am building a house in a Zone 2 area. I am putting 50mm EPS insulation under the slab and either 30mm or 50mm around the perimeter. The slab is a stiffened raft slab that does not use waffle pods. Do I need to insulate around the edge and internal beams which are 450mm deep? The slab itself is 125mm thick. I will have hydronic heating in the slab.
House will be on level ground in Class M soil.
Thanks in advance
Phil