Foundations & Floors -

Air Sealing/Insulation

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

This guide describes IECC 2015 and DOE Zero Energy Ready Home 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 the use of building cavities as supply or return ducts.

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

Guide describing how to create a capillary break at all crawlspace floors using polyethylene sheeting to manage moisture in crawlspaces.

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

Vapor retarder plastic should not be installed over fibrous insulation on basement or crawlspace walls unless rigid foam or spray foam is installed directly against the concrete, behind the blanket insulation.

Guide describing ways builders can block off entry points and otherwise make homes inhospitable to all manner of pests.

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

Guide describing methods for insulating an unvented crawlspace or conditioned basement with rigid foam on the interior side of the walls to provide an insulated space for HVAC equipment.