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Guides A-Z

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

Guide describing how to insulate a new foundation wall or an existing foundation wall by adding rigid insulation to the exterior side.

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.

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 an existing foundation wall by adding spray foam insulation to the interior side of the wall.

Guide describing the design and installation considerations for recladding of above grade walls using insulated vinyl siding.

Guide with details about how to provide a continuous water control layer across the roof assembly by sealing all roof penetrations in existing homes.

Guide describing how to insulate the sill beam or sill plate on the exterior side in a way that allows drying to the exterior, as part of an exterior wall upgrade.

Guide describing an approach to re-roofing an existing flat roof to improve thermal, water, and air control performance.

Guide describing how to re-roof an existing home with a sloped roof.

Guide describing how to install and properly integrate flashing at the intersection of an existing wall and an existing intersecting roof