Foundations & Floors -

Air Sealing/Insulation

This guide describes IECC 2009 and 2012 and ENERGY STAR Certified Homes insulation requirements.

Guide describing how to insulate a basement to improve the overall thermal performance of the building and provide more dry, usable conditioned space for home occupants and HVAC equipment.

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

Guide describing ways to seal drywall to the top plate of an exterior wall to air-seal the wall cavity.

Guide describing how to air-seal electrical wiring throughout a home.

Guide describing how to air-seal common walls between dwelling units in multifamily housing.

Guide describing how to air-seal around plumbing and piping penetrations through walls, ceilings, and floors.

Guide describing how to air-seal sill plates in single-family homes and multifamily buildings.

Guide describing how to air-seal and insulate a cantilevered floor.

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

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.

Guide describing how to air-seal and insulate the floor above an unconditioned basement or crawl space.

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

Guide describing how to upgrade a wall with a floor overhang (or cantilever) on an existing home by adding insulation (rigid insulating sheathing and/or closed-cell spray foam) and air-sealing.

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.

Guide describing RESNET Grade 1 level installation of insulation in walls, attics, and floors.

Guide describing different options for providing seismic and thermal resistance for homes with 'cripple' wall crawlspace foundations, which are known for their instability.

Guide describing how to insulate slabs on grade in climate zones 3 and higher.