Residential architects who specialize in the hot, humid, southern climate

Closed Crawl Spaces

If you have had second thoughts about having a closed crawl space in the hot, humid South..think again. The North Carolina research company Advanced Energy "has confirmed over the long term...that outside air contains more water vapor than the air in the crawl space during the warm seasons, and has no potential to dry the crawl space. Instead, the outside air ends up contributing water vapor to the crawl space." Thereby, vented crawl spaces support mold growth in a hot, humid climate. Advanced Energy's research on closed crawl spaces compared to vented crawl spaces showed that "closed crawl spaces consistently outperformed the wall-vented crawl spaces in terms of both moisture control and energy use." Learn more about closed crawl spaces here