Application of protective coatings; Installation of systems for protecting the microenvironment in building crawl spaces by reducing moisture and relative humidity levels, and for disinfecting, sanitizing, deodorizing, and applying antimicrobial preventative treatments in crawl spaces.; Application of coatings for others, namely, applying antimicrobial, mold-resistant, moisture-control, and deodorizing treatments to crawl spaces and crawl-space surfaces.