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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.

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

Guide describing how to install insulation below platforms constructed in the attic for walkways, HVAC equipment, or storage.

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

Guide describing the installation of insulating sheathing above the roof deck on existing homes. This retrofit assembly is appropriate for homes with conditioned attics or where the retrofit is intended to create a conditioned attic.

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

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.

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

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

Guide describing how to re-roof an existing home with a sloped roof and add insulation above the roof deck.

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