Source: Great American Environmental Division, May 2013
An apartment management company was notified of a water leak in the ceiling of one of their units during a heavy rainstorm. After the storm, the property management company sent out their repair contractor to inspect the damage and to provide a cost estimate for the repairs. During the investigation, it was determined that the roof had been leaking for a long period of time but not in large enough quantities to escape the insulation above the ceiling. The absorbent nature of the insulation made things worse by promoting higher humidity at relatively warmer temperatures, both factors helped support active mold growth.