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This heated garage plenum is insulated along the bottom and sides, and the insulation is fully aligned with an air barrier. The insulation at the bottom of the plenum space meets IECC insulation requirements.

Publication Date

Sat, 09/14/2024 - 12:00

Insulating Garages in Multifamily Buildings

Guide describing how to properly insulate garages in multifamily buildings.

Insulating Existing Floors over Garage

Guide with information about how to upgrade a garage ceiling when a portion of the interior of the house is located directly above the attached garage by adding insulation and air sealing.

This heated garage plenum space is insulated along its top, bottom and sides, and the insulation at the top of the plenum meets IECC requirements. The insulation along the top and sides is fully aligned with an air barrier.

Publication Date

Sat, 09/14/2024 - 12:00

Batt insulation is not an effective air barrier

Insulating Heated Garage Plenums in Multifamily Buildings

Guide providing methods for insulating heated garage plenums in multifamily parking garages.

Wrong – Insulation is misaligned with floor above

Publication Date

Fri, 10/28/2011 - 12:00

Right – Insulation is in contact with floor above

Publication Date

Fri, 10/28/2011 - 12:00

Drop-in ceiling assemblies consisting of suspended ceiling tiles (common in multifamily buildings) are often insulated with fiberglass or mineral wool batt insulation.

Publication Date

Sat, 09/14/2024 - 12:00

This assembly for above-grade or below-grade garage walls in any climate zone uses a hybrid of continuous rigid insulation and cavity insulation on the interior side of the wall.

Publication Date

Sat, 09/14/2024 - 12:00

Right - This heated garage plenum has insulated ceiling tiles.

Publication Date

Sat, 09/14/2024 - 12:00

Right - This heated garage plenum is insulated along the bottom of the plenum space.

Publication Date

Sat, 09/14/2024 - 12:00

Right – The band joist over this wall was properly insulated and air-sealed.

Publication Date

Fri, 10/28/2011 - 12:00

Insulating the exterior and garage-side faces of the plaza deck can reduce thermal bridging. If the garage is heated or partially heated, the faced batt insulation on the garage side of the plaza deck should extend to perimeter of garage.

Publication Date

Tue, 09/17/2024 - 12:00

Heated or partially heated garages with podium decks should be thermally isolated from both ambient exterior space and interior conditioned space by insulating the interior of the garage walls and ceiling and extending the insulation below grade.

Publication Date

Tue, 09/17/2024 - 12:00

Right - This heated garage plenum is insulated and has an opening to access the interior, allowing for repairs and maintenance.

Publication Date

Sat, 09/14/2024 - 12:00

Insulating both exterior and garage-side faces of plaza deck can reduce thermal bridging. If garage is heated or partially heated, hybrid spray foam/batt insulation on garage side of plaza deck should extend to the perimeter of the garage.

Publication Date

Tue, 09/17/2024 - 12:00

Right - Fiberglass/mineral wool insulation thermally isolates the garage from the interior occupied space above.

Publication Date

Sat, 09/14/2024 - 12:00

Air-seal and insulate the rim and band joists of walls separating an attached garage from the home’s conditioned space.

Publication Date

Fri, 10/28/2011 - 12:00

This assembly for above-grade and below-grade garage walls in any climate zone uses continuous rigid insulation along the interior of the wall.

Publication Date

Tue, 09/17/2024 - 12:00

Rigid insulation and air-sealing can be used to thermally isolate garages from interior occupied space in multifamily row houses/townhouses.

Publication Date

Sat, 09/14/2024 - 12:00

Rigid insulation can be used as a thermal break between a garage slab with a heated plenum space and a separately cast garage slab without a heated plenum space.

Publication Date

Sat, 09/14/2024 - 12:00

Air-seal the floor above a garage when there is living space above the garage and make sure floor insulation is in full contact with the underside of the subfloor.

Publication Date

Fri, 10/28/2011 - 12:00

Rigid insulation and air-sealing can be used to thermally isolate garages from multifamily row houses/town houses with basement foundations in IECC Climate Zones 3 or higher.

Publication Date

Sat, 09/14/2024 - 12:00

This wall assembly for above-grade garage walls uses cavity insulation and should only be used in IECC Climate Zones 4 or lower due to the risk of condensation on the interior surface of the concrete wall.

Publication Date

Tue, 09/17/2024 - 12:00

Insulating the exterior and garage-side faces of the garage plaza deck can reduce thermal bridging. If the garage is heated or partially heated, the spray foam on the garage side of the plaza deck should extend to perimeter of garage.

Publication Date

Tue, 09/17/2024 - 12:00

Assembly can be used in IECC CZ 3 and above to thermally isolate garages in multifamily row houses with slab foundations. For unheated garages, it is unnecessary to insulate wall between garage and exterior of slab or slab underneath garage.

Publication Date

Sat, 09/14/2024 - 12:00

Thermally isolate heated garages in multifamily buildings from ambient space, and thermally isolate all garages in multifamily buildings from interior occupied space. This parking garage is thermally isolated from space above with spray foam insulation.

Publication Date

Tue, 09/17/2024 - 12:00

Floor Above Garage

Guide describing how to create an air barrier between the garage and the conditioned space above it to prohibit pollutants from entering a home's interior.

Garage Rim/Band Joist Adjoining Conditioned Space

Guide describing the air-sealing of rim joists on walls connecting homes and attached garages.

Air Sealing Attached Garage

Guide describing ways to air-seal an attached garage in new and existing homes.

Heated recirculation plenum spaces can be installed in parking garages in cold climates to prevent pipes from freezing and warm the floor of occupied space directly above the garage.

Publication Date

Sat, 09/14/2024 - 12:00

This assembly can be used to thermally isolate heated or partially heated garages with slab foundations from the exterior in multifamily row houses/townhouses in IECC Climate Zones 3 and higher.

Publication Date

Sat, 09/14/2024 - 12:00