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Crawl Space Learning Center

What is the Purpose of a Crawl Space?

Dirt crawl space floor adds moisture to the home

A home built over a crawl space sucks up water vapor from the earth and allows it to enter the home.

Crawl spaces were built to provide a buffer between the house and its inhabitants and the damp, wet earth below. This seemed to make sense for many decades, especially since they were also a convenient place to put utility cables and ductwork used to circulate conditioned air throughout the house.

Today, however, we understand that a crawl space, instead of serving as a buffer, actually collects water and serves as a repository for humid air. This humid environment introduces a number of hazards, including mold and mildew growth, musty odors, and moist sills and framing that can lead to both structural damage and pest infestations.



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