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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 air-seal attic access panels, doors, and stairs to provide a continuous air barrier at the ceiling.

Guide describing how to air-seal duct and flue shafts.

Information guide providing links to guides describing specific ways to air-seal, insulate, and ventilate attics and roofs to minimize heat gain in new and existing homes.

Information guide describing proper attic air-sealing, insulation, and ventilation to combat ice dam formation on roofs in cold climate zones.

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

Guide describing how to insulate and air-seal attic knee walls and floor joist cavities under knee walls.

Guide describing application of a radiant barrier layer in the attic to block radiant heat transfer between hot surfaces and heat-absorbing surfaces.

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

Guide describing causes of condensation in attics and roof assemblies during cold weather and ways to reduce this condensation.

Guide describing how ice dams form and how roofs can be constructed to prevent them.

Guide describing continuous rigid insulation installation procedures to reduce thermal bridging and help provide thermal protection.

Guide describing the practice of burying HVAC ducts in loose-fill insulation on the attic floor.

Guide describing approaches to burying and encapsulating ducts in unconditioned attics to increase the overall R-value of duct insulation.

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

Information guide describing things to consider in the attic, ceiling, or roof before attempting retrofits of items including HVAC, wiring, or structural systems.

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

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

Guide describing options for insulating and air sealing at either the attic floor or along the roof line in new homes.

Guide describing wind washing of insulation in the eaves of vented attics and how to prevent it.

Roofs & Attics

Air Sealing and Insulating Ceilings in Vented Attics

Air Sealing Attic Access Panels/Doors/Stairs

Air Sealing Duct and Flue Shafts

Air Sealing, Insulating, and Venting Attics and Roofs to Reduce Heat Gain

Attic Air Sealing, Insulating, and Ventilating for Ice Dam Prevention

Attic Eave Minimum Insulation

Attic Knee Walls

Attic Radiant Barriers

Batt Insulation for Existing Vented Attics

Below Deck Spray Foam Insulation for Existing Roofs

Blown Insulation for Existing Vented Attic

Condensation Control in Attics and Roofs in Cold Weather

Construct Roofs and Attics for Ice Dam Prevention

Continuous Rigid Insulation Sheathing

Ducts Buried in Attic Insulation

Ducts Buried in Attic Insulation and Encapsulated

Insulation Below Attic Platforms

Pre-Retrofit Assessment of Attics, Ceilings, and Roofs

Spray Foam Insulation Applied to Existing Attic Floor

Unvented Attic Insulation

Vented versus Unvented Attic

Wind Washing

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Roofs & Attics