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The Carbondale, CO house is an 1,190 square foot, one-and-a-half story single-family house with three bedrooms, two baths, and a 330 square foot crawlspace located in Carbondale, CO (Cold Climate). It features a vented roof with 2” airspace, R-30 batt insulation and 1” XPS rigid insulation, and a vented attic with R-38 batt insulation. The walls consist of 1” XPS rigid insulation and R-19 cellulose insulation in the stud cavities, with R-19 cellulose insulation at the rim joist. The crawlspace wall is insulated with 1 ½” “Thermax” polyisocyanurate rigid insulation on the interior and the slab is uninsulated.