Foundations & Floors -

Air Sealing/Insulation

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

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 how to insulate a floor over unconditioned space with conditioned space above by adding insulation and air-sealing.

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

Guide describing principles of insulating and air sealing band joists as a stand alone energy upgrade, or as part of creating a closed crawlspace.

Guide describing how to insulate an existing slab floor by adding rigid foam insulation over the slab then installing a floating subfloor.