Crawl Space Repair - Bare walls in the crawl space

The dirt floor isn't the only source of moisture in a crawl space. Since most crawl spaces are entirely below ground, the walls are surrounded by moist dirt. If it is a block wall foundation, like this home, the hollow centers of the concrete blocks can fill with water. All that water has to go somewhere, and usually that means it will leak out either as standing water or moisture in the air.