We are currently in the process of building a new home and all the exterior walls are insulated concrete forms (ICF). Do any of you have any examples of wood stoves being used in this kind of construction? I am worried about putting in a stove that will roast us out with even a small fire. The house is about 3200 sq ft. It is a walk out basement with only one basement wall exposed. There is 2.5 inches of foam on the outside, 8 inches of concrete and 2.5 inches of foam on the inside. The windows are u-.24 and including doors there is about 285 sq ft. Roof will be spray foamed with about 5 inches of open cell. The climate zone is 6b in this area. My initial though was to go with the f400 but now I am wondering if the F3 would keep the space more comfortable. I have designed the hvac system to have return airs up a cathedral ceiling right in front of the stove to help circulate the warmth through the house. If any one has put a wood stove in an ICF, SIP or even spray foamed house, I would love to hear the results.