Mold and Mildew Growth
Microbial growth occurs when there are warm temperatures, relative humidity is above 60% and an organic food source is present. The meter in the joist is a wood moisture meter. It tells us the moisture content of the joist, which is about 17% in this case. At about 19% wood moisture content, wood rot can begin, if untreated, this can result in serious problems with the home's structure.