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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 closed crawlspace walls and band joist areas with rigid foam board insulation.

Guide describing how to design or retrofit a crawlspace to reduce the risk of damage during a flood event.

Guide describing how to retrofit an existing basement floor or slab to reduce moisture issues.

Guide describing how to install a capillary break under a slab foundation using either polyethylene sheeting or rigid insulation installed over aggregate or over sand and geotextile matting.

Guide describing how to install a radon-mitigating vertical ventilation pipe in new and existing homes with various types of house foundations.

Guide describing how to upgrade a crawlspace floor in an existing home by adding 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 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 techniques and measures for increasing the termite resistance of a home's foundations.