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Conceptual insulation at cape-style roof - ceiling and knee wall cavity insulation

CAD File

Rigid foam insulating sheathing installed over an existing garage ceiling with retrofits to air seal exterior wall before adding exterior wall insulating sheathing

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Right – Spray foam insulates the walls and ceilings separating the garage from the home.

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Raised heel energy trusses extend past the exterior wall and are deeper at the wall allowing room for full insulation coverage over the top plate of the exterior walls.

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The rim joists and top plates are air sealed and insulated with open-cell spray foam while the walls are filled with blown fiberglass.

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The unvented attic is insulated along the underside of the roof deck with 7 inches (R-49) of closed-cell spray foam, providing vaulted ceilings and a conditioned knee wall space for ducting.

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Conceptual insulation at cape-style roof - roof cavity insulation with rigid insulation closure

CAD File

Skylight Shaft Walls

Guide

Guide describing insulation techniques for skylight shaft walls.

Attic Eave Minimum Insulation

Guide

Guide providing guidance on insulating attic eaves in new and existing single-family homes and multifamily buildings.

Advanced Framing: Insulated Corners

Guide

Guide describing how to frame and insulate corners to reduce heat losses and gains though structural framing.

Insulating Existing Floors over Garage

Guide

Guide describing how to insulate and air seal the floor joists over a garage when there is loving space above the garage.

Roof/Attic to Exterior Wall Air Control Upgrade

Guide

Guide describing how to retrofit an exterior wall and/or attic to provide continuous air sealing.

The attic kneewall and the open floor cavities under kneewall are both sealed and insulated in one step with spray foam insulation

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Unvented Attic Insulation

Guide

Guide describing methods for insulating an unvented attic along the roof line.

Batt Insulation for Existing Vented Attics

Guide

Guide describing how to increase insulation in existing homes by installing batt insulation on the ceiling plane of a vented attic.

This builder applied an air-sealing layer of spray foam along the underside of the roof deck and the inside of the walls before filling the wall cavities with blown cellulose.

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Blown Insulation for Existing Vented Attic

Guide

Guide describing how to insulate a vented attic in an existing home using blown insulation added to the attic floor.

The batt insulation shown here was properly installed to fill the ceiling cavities.

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The walls and ceilings of this post-and-beam home are filled with netted blown fiberglass.

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Spray Foam Insulation Applied to Existing Attic Floor

Guide

Guide describing how to apply spray foam insulation to the floor of the attic in existing homes.

Conceptual insulation practice at attic-style truss system - above unconditioned space

CAD File

Conceptual insulation practice at attic-style truss system - above conditioned space

CAD File

Cut-away view showing unsealed gaps around a heating duct that goes through a wall

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Limited attic access may make it necessary to use a bore scope when inspecting for missing air barriers and insulation in existing buildings.

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Right-- IR photo shows how effectively spray foam insulated/air sealed attic kneewall and the floor cavities under kneewall

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The original corner seam is air-sealed with caulk, then rigid foam is installed on the existing garage ceiling and walls, and finally covered with drywall.

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Conceptual insulation at cape-style roof - ceiling and knee wall cavity insulation

Rigid foam insulating sheathing installed over an existing garage ceiling with retrofits to air seal exterior wall before adding exterior wall insulating sheathing

Right – Spray foam insulates the walls and ceilings separating the garage from the home.

Raised heel energy trusses extend past the exterior wall and are deeper at the wall allowing room for full insulation coverage over the top plate of the exterior walls.

The rim joists and top plates are air sealed and insulated with open-cell spray foam while the walls are filled with blown fiberglass.

The unvented attic is insulated along the underside of the roof deck with 7 inches (R-49) of closed-cell spray foam, providing vaulted ceilings and a conditioned knee wall space for ducting.

Conceptual insulation at cape-style roof - roof cavity insulation with rigid insulation closure

Skylight Shaft Walls

Attic Eave Minimum Insulation

Advanced Framing: Insulated Corners

Insulating Existing Floors over Garage

Roof/Attic to Exterior Wall Air Control Upgrade

The attic kneewall and the open floor cavities under kneewall are both sealed and insulated in one step with spray foam insulation

Unvented Attic Insulation

Batt Insulation for Existing Vented Attics

This builder applied an air-sealing layer of spray foam along the underside of the roof deck and the inside of the walls before filling the wall cavities with blown cellulose.

Blown Insulation for Existing Vented Attic

The batt insulation shown here was properly installed to fill the ceiling cavities.

The walls and ceilings of this post-and-beam home are filled with netted blown fiberglass.

Spray Foam Insulation Applied to Existing Attic Floor

Conceptual insulation practice at attic-style truss system - above unconditioned space

Conceptual insulation practice at attic-style truss system - above conditioned space

Cut-away view showing unsealed gaps around a heating duct that goes through a wall

Limited attic access may make it necessary to use a bore scope when inspecting for missing air barriers and insulation in existing buildings.

Right-- IR photo shows how effectively spray foam insulated/air sealed attic kneewall and the floor cavities under kneewall

The original corner seam is air-sealed with caulk, then rigid foam is installed on the existing garage ceiling and walls, and finally covered with drywall.

Dropped Ceiling/Soffit Below Unconditioned Attic

Building Code Training - Residential Thermal Envelope - Air Sealing

Air sealing at skylight shaft

Vented versus Unvented Attic