Exterior, House Building Type, Wood Siding Material, Green Roof Material, and Flat RoofLine Spectrally selective Quantum Windows, radiant floor heating, a cold roof system that prevents ice dams, and closed cell foam insulation to prevent heat loss are some of the key sustainable features incorporated into the camp’s energy-efficient buildings.  Photo 3 of 14 in Stacked-Wood Walls Tie This Eco-Friendly Camp to the Montana Landscape