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Guide describing how to insulate a floor overhang (or cantilever) on an existing home by adding insulation and an air barrier to air seal the floor joist bays under the cantilever.
Vapor retarder plastic should not be installed over fibrous insulation on basement or crawlspace walls; rigid foam or spray foam should be installed directly against the concrete, behind the blanket insulation.
Guide describing how to air-seal and insulate a ceiling where the insulation is installed on top of the ceiling (on the attic floor) in a vented attic.
Guide describing how to install flashing that is integrated with air and water control layers around piping, vents, and other wall penetrations as part of an exterior wall retrofit.
Guide describing the installation of insulating sheathing above the roof deck on existing homes. This retrofit assembly is appropriate for homes with conditioned attics or where the retrofit is intended to create a conditioned attic.
Guide providing information on how cool roofs and wall cladding surfaces work, which climates can most benefit from them, and how to find and select cool roofs and wall cladding products.
Guide describing how to add spray foam insulation to the underside of the existing roof deck as part of the conversion of a vented attic to an unvented, insulated attic.