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

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

CAD File

Unvented Attic Insulation

Guide

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

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

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

CAD File

Wrong – Insulation is in direct contact with this non-insulation contact (IC)-rated recessed light fixture

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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.

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

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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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.

Insulating and Air Sealing Existing Non-ICAT Recessed Lights

Guide

Guide describing how to air seal and insulate a non-ICAT recessed "can" light from an accessible attic in an existing home.

Spray foam insulation used for raised ceiling duct chase

Spray foam insulation used for raised ceiling duct chase

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

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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Spray foam insulation used for raised ceiling duct chase.

Spray foam insulation used for raised ceiling duct chase.

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

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

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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

Spray foam insulates and air-seals the ceiling deck and top plates of this vented attic.

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Right – The top of the enclosure over this recessed can light remains clear of attic insulation

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Wrong - IR image shows a lack of air-sealing and insulation around a ceiling light fixture.

Wrong - IR image shows a lack of air-sealing and insulation around a ceiling light fixture.

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Spray foam insulates the top plates and air seals them to the ventilation baffles before ceiling drywall is installed.

Spray foam insulates the top plates and air seals them to the ventilation baffles before ceiling drywall is installed.

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Right – The insulating enclosure over this non-IC rated recessed light fixture is centered and air sealed

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Wrong - Batt insulation does not provide complete coverage across the attic floor so ceiling joists are exposed resulting in thermal bridging.

Wrong - Batt insulation does not provide complete coverage across the attic floor so ceiling joists are exposed resulting in thermal bridging.

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

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

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Right – Closed-cell spray foam insulates and air-seals the rim joist above a shared wall between the garage and living space.

Right – Closed-cell spray foam insulates and air-seals the rim joist above a shared wall between the garage and living space.

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Rigid foam insulating sheathing is installed on existing garage ceiling and covered with a new gypsum board fire protection layer installed over the foam.

Rigid foam insulating sheathing is installed on existing garage ceiling and covered with a new gypsum board fire protection layer installed over the foam.

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Install a sealed enclosure over a non-IC rated recessed light fixture to air-seal the can and to prevent insulation from touching the recessed can light.

Install a sealed enclosure over a non-IC rated recessed light fixture to air-seal the can and to prevent insulation from touching the recessed can light.

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The dark purple areas and long streaks in this IR camera image show extreme cold spots along the top of the walls, indicating a lack of both air sealing and insulation above the top plates of these walls.

The dark purple areas and long streaks in this IR camera image show extreme cold spots along the top of the walls, indicating a lack of both air sealing and insulation above the top plates of these walls.

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Skylight Shaft Walls

Guide

Guide describing insulation techniques for skylight shaft walls.

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.

Dropped Ceiling/Soffit Below Unconditioned Attic

Guide

Guide describing how to insulate and air-seal dropped ceilings and soffits to prevent air leakage.

Install Top Plates or Blocking at the Top of Walls Adjoining Unconditioned Spaces

Guide

Guide describing how to correctly air-seal a wall with missing top plates or open wall cavities.