A damp, dirty crawl space is an eyesore. But the presence of mold, wood rot and pest in the crawl space means you have more significant problems. Moisture in a crawl space will attract mold as well as insect and animal pests. Airborne mold spores are a serious health hazard, and wet wood in your crawl space can attract termites and carpenter ants that cause further damage.
Today building scientists recommend that crawl spaces be sealed or “encapsulated” to prevent all the undesirable effects of crawl space moisture. The encapsulation process involves several steps that completely isolate the crawl space interior from moist exterior conditions.