Crawl Space Moisture Control - Relative Humidity
The relative humidity is how much moisture air at its current temperature can hold. In this crawl space, it is 81.42 degrees Fahrenheit and there is a 74.18% relative humidity (RH). At 60% RH the potential for mold growth occurs. The humidity and moisture in the air are absorbed by porous surfaces such as the insulation and wood. Condensation occurs on cooler surfaces such as ductwork, plumbing, and foundation walls.