David Wright

Utility lines in a vented crawl space are often affected by outside air carrying in moisture. Sealing vents, installing the CleanSpace Encapsulation System and insulating the crawl space walls with Spray Foam will help control the flow of air carrying moisture into the crawl space. 

As the insulation acts as a sponge, it holds moisture against the wood joists raising the moisture content of the joists. Mold requires organic material, warm temperatures, and relative humidity above 60% to grow. Often we see mold growing on the paper backing of the insulation and on wood joists in the crawl space. As the moisture content in the joists increases, the probability for wood rot becomes more likely. Once the joists reach 19% moisture wood rot begins. An antimicrobial called Shockwave is sprayed onto the joists to kill the mold. Once the encapsulation is complete and the dehumidifier is installed it will be set to turn on before the humidity in the crawl space reaches 60% (The ideal point for mold to grow). The Encapsulation system will help prevent ideal conditions for mold to grow from occurring and make the home healthier and more comfortable.

This crawl space had falling insulation, mold/mildew, efflorescence from moisture and condensation, and a failing vapor barrier. We installed the CleanSpace Encapsulation System with closed cell spray foam insulation on the crawl space walls, sealed the rim and band and sill plate, and installed a SantaFe Dehumidifier, sealing the home off from the earth and controlling the relative humidity to help make this Williamsburg home more comfortable and energy-efficient.