7/ The Alta, WY cabin I built back around '09, designed it to be super insulated with solar assisted radiant floor heat, triple pane windows, 12" thick walls consisting of 2 -2x4 walls w/4" gap for thermal break, R40 walls & R60 ceiling. 12volt dc led lighting system on a deep cycle battery so house stays lit in a power outage. Built to last, locally sourced, & efficient. #Homemade #House #Woodwork #Wyoming