The insulation got wet during installation. Can it still be used?
The chief concern with wet insulation is the possibility that contaminants may have been carried into the insulation by the water and that the dirt and contaminants can become a nutrient source for mold or mildew growth. For this reason, insulation manufacturers recommend that wet insulation not be installed, or be removed and replaced with new, clean, dry insulation. Studies have shown that wet insulation may be air-dried in place and, once dry, its thermal performance will be unaffected provided the original insulation thickness is maintained. However, if the source of water is contaminated or not known, the insulation must not be used.
