Where Mold Grows in Houses
Porous materials, like wood, carpet, padding and drywall absorb and retain a surprising amount of water. Unchecked, fungal growth can occur within a few days of a moisture event. According to the Center for Disease Control "recent research indicates that common construction materials may contain mold spores when they arrive from distributors and that some of the spores will germinate if exposed to relative humidity (RH) of 95 percent for extended periods (22-60 days); if they are wetted with water, germination can occur in less than 5 days."
Molds are fungi that are lurk indoors and outdoors, just about everywhere. Know to sicken people or aggravate existing illnesses such as allergies and asthma, mold poses a significant health risk.