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This retrofit house is located in Millbury, MA (Cold Climate). It involved adding two layers of 2” foil-faced polyisocyanurate rigid insulation above the roof deck and open-cell spray foam…

This retrofit house is located in Lancaster, MA (Cold Climate). It involved building an additional floor and a new roof with a raised heel truss and 18” of blown cellulose insulation at the attic…

This retrofit house is located in Jamaica Plain, MA (Cold Climate). It involved adding 1” foil-faced polyisocyanurate rigid insulation and closed-cell spray foam insulation below the roof deck.…

This retrofit house is located in Gloucester, MA (Cold Climate). It involved adding three layers of 2” polyisocyanurate rigid insulation above the roof deck and netted cellulose insulation in the…

This retrofit house is located in Brookline, MA (Cold Climate). It involved retrofitting the walls with two 2” layers of polyisocyanurate rigid insulation to the exterior of the existing wall…

This retrofit house is located in Belmont, MA (Cold Climate). It involved adding three layers of 2” foil-faced polyisocyanurate rigid insulation above the roof deck and netted cellulose insulation…

This retrofit house is located in Belchertown, MA (Cold Climate). It involved adding R-56 closed-cell spray foam insulation in the rafter cavities and over the face of the rafters. A new 2x4 wood…

This two-story enclosure with a basement is designed for Vineyard, UT (Cold Climate). The roof features Structural Insulated Panels (SIPs) with cedar shingles. The 2x6 advanced wood frame walls…

This one-story slab-on-grade enclosure is designed for Tucson, AZ (Hot-Dry/Mixed-Dry Climate). The flat roof is insulated with cavity insulation in the roof truss and features a rubber roofing…

This two-story slab-on-grade enclosure is designed for Sacramento, CA (Hot-Dry/Mixed-Dry Climate). It features a vented attic with a raised heel truss and cavity insulation at the attic floor, and…