International Residential Code

Foundation Dampproofing, Waterproofing, and Protection for Insulation at Grade

Dampproofing and Waterproofing for Foundations For basements and crawl spaces, install dampproofing, waterproofing, capillary breaks,  insulation, and drains as soon as possible so that rain during construction doesn’t create moisture problems in the new home. Dampproofing is a sprayed or rolled-on vapor retarder that provides the minimal protection from water vapor needed for dry soils. …

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