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

Guide describing RESNET Grade 1 level installation of insulation in walls, attics, and floors.

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

This guide describes IECC 2015 and DOE Zero Energy Ready Home insulation requirements.

This guide describes IECC 2009 and 2012 and ENERGY STAR Certified Homes insulation requirements.

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 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.