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Side view showing air-sealing and rigid foam insulation is installed over existing wall and ceiling under a room above, then covered with new gypsum board.

Side view showing air-sealing and rigid foam insulation is installed over existing wall and ceiling under a room above, then covered with new gypsum board.
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Side view showing how the existing garage wall and ceiling are air-sealed prior to installing rigid foam insulation on the garage side of the shared wall of an existing home.

Side view showing how the existing garage wall and ceiling are air-sealed prior to installing rigid foam insulation on the garage side of the shared wall of an existing home.
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Siding has been removed so cellulose insulation can be dense-packed into the exterior walls of this home

Siding has been removed so cellulose insulation can be dense-packed into the exterior walls of this home
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Single framed wall converted to double wall and insulated with closed-cell spray foam

Single framed wall converted to double wall and insulated with closed-cell spray foam
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Single framed wall converted to double wall and insulated with closed-cell spray foam and loose-fill fibrous insulation

Single framed wall converted to double wall and insulated with closed-cell spray foam and loose-fill fibrous insulation
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Single framed wall converted to double wall and insulated with open-cell spray foam

Single framed wall converted to double wall and insulated with open-cell spray foam
CAD File:

Single top plate - interior wall with gusset

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Single top plate - interior wall with gusset
CAD File:

Single top plate splice with metal plate

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Single top plate splice with metal plate
CAD File:

Single top plate with centered joint splice

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Single top plate with centered joint splice
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SIP panel walls are less susceptible to air leakage and convection issues than stick-built walls

SIP panel walls are less susceptible to air leakage and convection issues than stick-built walls
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SIP panels should be stacked high, dry, and flat

SIP panels should be stacked high, dry, and flat
CAD File:

Site-built insulated header

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Site-built insulated header
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Slab independent of foundation wall

Slab independent of foundation wall
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Smoke generators are used to identify air leakage sites during depressurization testing

Smoke generators are used to identify air leakage sites during depressurization testing
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Special molded corners provide continuous insulation layer at the corners to improve structural strength and minimize thermal bridging

Special molded corners provide continuous insulation layer at the corners to improve structural strength and minimize thermal bridging
Video:

Split and Notch Batts to Fit around Wires and Electrical Boxes

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Spray foam air seals the boot to the ceiling

Spray foam air seals the boot to the ceiling
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Spray foam at band

Spray foam at band
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Spray foam insulates the rim joist and air seals the subfloor-rim joist and rim joist-top plate connections

Spray foam insulates the rim joist and air seals the subfloor-rim joist and rim joist-top plate connections
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Spray foam insulation air-seals and insulates the floor above the garage; the joist will be filled with fibrous insulation in this flash-and-batt approach.

Spray foam insulation air-seals and insulates the floor above the garage; the joist will be filled with fibrous insulation in this flash-and-batt approach.
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Spray foam insulation is installed in open wall cavities to air seal and insulate

Spray foam insulation is installed in open wall cavities to air seal and insulate
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Spray foam provides a critical seal between the subfloor, rim joist, and sill plate

Spray foam provides a critical seal between the subfloor, rim joist, and sill plate
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Standard roof trusses are narrow at the eaves, preventing full insulation coverage over the top plate of the exterior walls

Standard roof trusses are narrow at the eaves, preventing full insulation coverage over the top plate of the exterior walls
CAD File:

Structured insulated panels (SIPS) as band joist

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Structured insulated panels (SIPS) as band joist