In order to fight against fungal activity, mold spores, and dust mites, the humidity in a crawlspace should be maintained in a safe range of less than 60%. During an inspection, New Age Contractors took air humidity readings between 84%-85%. Wood moisture readings revealed levels between 20%-26% and these levels should be kept at a safe range of less than 15% to alleviate the risk of wood rot and floor cupping. To resolve the issue, this crawlspace received a 4-ply, 12 mil liner that consists of 2 layers of polyethylene film, two layers of molten polyethylene film, and a nylon cord reinforcement. After the vapor barrier was installed, another test was conducted showing that all the moisture and humidity levels were at a safe range.
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