Building Science Corporation
April 28, 2006

The Haymount, VA house is a 1,260 square foot, one-and-a-half story single-family detached house with three bedrooms, two baths, and an 816 square foot crawlspace located in Haymount, VA (Mixed-Humid Climate). It features a vented roof with 2” air space, R-30 cellulose insulation and 1” XPS rigid insulation and a vented attic with R-38 cellulose 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 house features Low-E windows. The crawlspace wall is insulated with 1 ½” foil-faced polyisocyanurate rigid insulation on the interior.