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Measure the depth of insulation

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Attic Eave Minimum Insulation

Guide

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

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.

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.

Wrong – Insulation will not be aligned with air barrier

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Failure in attic insulation effectiveness caused by wind washing pushing insulation away from the edges of the attic space.

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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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Air Sealing and Insulating Ceilings in Vented Attics

Guide

Guide describing how to air-seal and insulate a ceiling where the insulation is installed on top of the ceiling (on the attic floor) in a vented attic.

Wrong – The framing will not allow for required insulation depth.

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Right – The framing allows for required insulation depth.

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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.

Below Deck Spray Foam Insulation for Existing Roofs

Guide

Guide describing how to add spray foam insulation to the underside of the existing roof deck as part of the conversion of a vented attic to an unvented, insulated attic.