Super-insulated (r-40 walls r-60+ roof) 5 bedroom 3 bath residence w/cedar shingle siding & cellular PVC trim. We used offset exterior stud walls to create a thermal break which resulted in 12" thick walls filled w/dense-pack insulation. The slab-on-grade w/radiant heat is sitting on 4" of rigid foam insulation. The roof mounted solar panels help heat the slab. Two energy recovery ventilators bring fresh air to this super-tight enclosure.