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Foundations & Floors - Rim/Band Joist

The guides on this page have information about rim/band joists. Guides are presented in alphabetical order. Use the filters to the right of the page to further focus your search based on construction type or keywords.


Solution Center Guides


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

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