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This construction uses 2" XPS slotted rigid insulation (attached to wall through 1x3 furring strips) and 2" foil-faced polyisocyanurate rigid insulation (attached to furring strips) against the… Read More

This construction uses 2" foil-faced polyisocynaurate insulation against the concrete foundation and a 2x4 framed wall with R-12 cellulose insulation in the stud space. The slab is insulated with 2"… Read More

This construction uses 1" XPS rigid insulation against the concrete foundation and a 2x4 framed wall with R-13 fiberglass insulation in the stud space. The slab is left uninsulated and the rim joist… Read More

This retrofit house is located in Westford, MA (Cold Climate). It involved rebuilding the roof to convert the attic into living space using closed-cell spray foam insulation in the rafter cavities.… Read More

This retrofit house is located in Quincy, MA (Cold Climate). It involved building an additional floor and a new unvented roof with two layers of 2” foil-faced polyisocyanurate rigid insulation above… Read More

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

This retrofit house is located in Newton, MA (Cold Climate). It involved adding two layers of 2” foil-faced polyisocyanurate rigid insulation above the roof deck with 2x4 furring above the insulation… Read More

This retrofit house is located in Milton, MA (Cold Climate). It involved replacing the asphalt shingles on the roof and adding 8” closed-cell spray foam insulation in the rafter cavities. The walls… Read More

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 insulation… Read More

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… Read More