Vapor retarder plastic should not be installed over fibrous insulation on basement or crawlspace walls unless rigid foam or spray foam is installed directly against the concrete, behind the blanket insulation.
Guide describing different options for providing seismic and thermal resistance for homes with basement foundations, crawlspace foundations, or crawlspace foundations with a "cripple" wall.
Book describing Carpentry and Construction, Construction Materials, Hand Tools, Power Tools, Construction Equipment, Jobsite Safety, and Working Conditions, Building Design and Print reading, Inspections Survey Instruments and Operations, Foundation and Outdoor Slab Construction, Floor, Wall, and...
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 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.
Information guide describing things to consider in the basement or crawlspace before attempting retrofits of adjacent items including HVAC, wiring, or structural systems.
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.