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Foundations & Floors - Crawlspaces

The guides on this page have information about crawlspaces. 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 insulate a basement to improve the overall thermal performance of the building and provide more dry, usable conditioned space for home occupants and for HVAC equipment.

Guide describing how to install a capillary break to help manage moisture in foundations.

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

Guide describing how to apply water management strategies to below grade walls.

Guide describing installation of sump pumps in the basement or crawlspace of a home.

Guide describing how to install slab edge insulation when retrofitting existing slab-on-grade foundations.

Guide describing how to properly grade a site so water will not saturate the soil, and penetrate into the foundation.

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

Guide describing how to help drain water away from the perimeter footing.

Guide describing how to conduct a home performance assessment before beginning retrofit projects in existing homes.

Guide describing how to upgrade a crawlspace floor in an existing home by adding insulation.

Vapor retarders can be a crucial part of the building envelope and can help manage moisture issues to keep the home dry. However, before installing a vapor retarder, installers must be aware that in some instances vapor retarders can increase the likelihood of condensation issues.

Information guide describing how to assess crawlspaces and basements before proceeding with upgrades in existing homes.

Guide describing ways to reduce access to bugs, rodents and other pests through openings in a home.

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

Guide describing how to insulate closed crawlspace walls and band joist areas with rigid foam board insulation.

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

Guide describing the need for covers on sump pumps in the basement or crawlspace of a home.

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.

Guide providing information about treating bulk water drainage issues and moisture control measures in existing basements and crawl spaces.