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This is another alternative to the minimum code required basement insulation in DOE climate zones 4 and higher. This construction uses a 2x4 framed wall against the concrete foundation with R-13… Read More
Cold
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This construction uses insulated concrete form (ICF) with 2" XPS rigid insulation on the interior and exterior of the concrete foundation wall. The slab is insulated with 2" XPS rigid insulation… Read More
Cold
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4" XPS rigid insulationDampproofingConcrete foundation wall2" XPS rigid insulation under slab Thermal ControlThis proposed wall system has an installed insulation R-value of R-20 and results in… Read More
Cold
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This construction uses continuous R-10 or R-13 batt insulation on the interior of the concrete foundation wall. The slab is left uninsulated and the rim joist is insulated with batt insulation. … Read More
Cold
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This construction uses 2x4 framed wall offset 2.5" from concrete with 6" open cell low density spray foam (R-21) between and behind the stud wall. The slab is insulated with 2" XPS rigid insulation… Read More
Cold
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The figure below shows 2" XPS or foil-faced polyisocyanurate rigid insulation and 6" open cell low density spray foam insulation installed on the interior of the rimjoist and foundation wall, and 2"… Read More
Cold
- ETW
This construction uses 2 layers of 2" XPS rigid insulation on the exterior of the concrete foundation wall. The slab is insulated with 2" XPS rigid insulation under slab and the rim joist is… Read More
Cold
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Dampproofing
4" XPS rigid insulation
Two 2" concrete foundation walls
2" XPS rigid insulation under slab
Thermal Control
This construction strategy has an installed insulation R-value of R-20,… Read More
Cold
- ETW
This construction uses 2 layers of 2" foil-faced polyisocynaurate insulation against the concrete foundation and a 2x6 framed wall with R-19 unfaced fiberglass insulation in the stud space. The slab… Read More
Cold
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This construction uses 3 1/2" closed cell high density spray foam insulation on the interior of the rimjoist and foundation wall, and 2" XPS rigid insulation under slab. As shown below, the spray… Read More
Cold
- ETW
This construction uses 2" XPS rigid insulation against the concrete foundation and a 2x6 framed wall with R-19 unfaced fiberglass insulation in the stud space. The slab is insulated with 2" XPS rigid… Read More
Cold
- ETW
This construction uses 2" XPS rigid insulation against the concrete foundation and a 2x4 framed wall with R-13 unfaced fiberglass insulation in the stud space. The slab is insulated with 2" XPS rigid… Read More
Cold
- ETW
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
Cold
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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
Cold
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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
Cold
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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
Cold
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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
Cold
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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
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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
Cold
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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
Cold
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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 insulation… Read More
Cold
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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
Cold
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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. The… Read More
Cold
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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… Read More
Cold
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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… Read More
Cold
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