High Humidity

If there is high humidity in the crawl space along with water, this is a recipe for disaster. Humidity levels above 50% contribute to mold growth, unpleasant odors, failing support systems, and more.  Crawl spaces commonly have high relative humidity and moisture. These conditions promote mold growth, especially on organic materials like wood and insulation. Moisture in the crawl space also can enter other areas of the home through cracks in walls, floors, and the ceiling, and contribute to mold growth there.