Many homes built on traditional crawl spaces in Virginia and the southeast suffer from moisture control issues. Moisture comes from several sources including humidity, condensation, low-grade foundations with poor drainage, rising moisture from the ground and rainwater. Venting can’t remove it, in fact, it actually exacerbates the problem. The result is poor indoor air quality due to mold and microbial growth, high humidity indoors, wood rot, and insect infestation.
The solution is crawl space encapsulation. The result is maintaining the home’s structural integrity, increased comfort levels and improved air quality. Therefore, encapsulation will probably soon become part of the building code for all new homes.