During warmer weather, air within crawl spaces below homes and porches naturally becomes warmer and saturated with ground moisture. Left untreated, this moisture-ladened air can cause problems including premature rotting of the structural wood components (increasing the potential for termite infestation) as well as rusting and corrosion of plumbing pipes. What’s more, high humidity can promote mold buildup, off-gassing from treated lumber and foul odors that migrate into living areas.