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.
To minimize flood risks with new construction, homes should be built on high ground outside of high-risk flood areas and above the base flood elevation (BFE). New homes should be constructed in conformance with the National Flood Insurance Program (NFIP) and local floodplain management regulations...
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.