Although bathrooms (particularly shower stalls) and basements are typical moist areas prone to mold growth, any moist area in the home can be moldy. Drywall, ceiling tiles, carpets, furniture, ductwork, roofing, paneling, wallpaper, under sinks, and the areas around plumbing pipes are examples of areas in the home that can become infested by mold if the ideal growing conditions are present.
Mold spores from the outdoor air can enter the home through open doors, windows, and vents. It may also become attached to clothing, shoes, and pets and therefore be carried indoors.
Mold can have many different colors (including brown, green, and black) and sometimes appears as spots. Additionally, a musty odor may be present. Mold growth may also be hidden underneath carpeting, on the back side of wallpaper, and behind drywall or wall paneling. Saunas, greenhouses, and construction areas are places where mold is commonly found.