A mold problem can usually be seen or smelled. Mold growth may often appear as slightly furry, discolored, or slimy patches that increase in size as they grow. Molds also produce a musty odor that may be the first indication of a problem. The best way to find mold is to examine areas for visible signs of mold growth, water staining, or follow your nose to the source of the odor. If you can see or smell mold, you can assume you have a mold problem. Other clues include excess moisture and water damage. It may be necessary to look behind and underneath surfaces, such as:

Carpets
Wallpaper
Cabinets
Attics
Crawlspaces
Basements
Behind Walls

There are some areas of the home that are always susceptible to mold growth and should be part of routine cleaning to keep them under control. They are seldom the cause of significant health effects. These are:

The seal on the refrigerator door
Shower curtains
Window moldings
Shower stalls and bathroom tiles
Surfaces on and around air conditioners

Common Exposure Effects

Allergy and irritation are the most common symptoms of mold exposure. Although symptoms will vary, the most common symptoms seen in people exposed to mold indoors include:

Nasal and sinus congestion
Eye irritation, such as itchy, red, watery eyes
Respiratory problems, such as wheezing and difficulty breathing
Cough
Throat irritation
Skin irritation, such as a rash
Headache
Asthma attacks for those with mold allergies

Common Sources of Moisture

Mold growth may occur in your home if there is sufficient moisture because mold spores are everywhere. Be on the lookout for these common sources of moisture:

Flooding
Roof leaks
Plumbing leaks, drainage problems
Damp basements and crawl spaces
Steam from the bathroom or kitchen
Condensation resulting from poor or improper insulation or ventilation
Humidifiers
Wet clothes drying inside the home or a clothes dryer venting indoors
Poor or improper ventilation of combustion appliances

Indications of a moisture problem may include discoloration of the ceiling or walls, warping of the floor, or condensation on the walls or windows. The key to preventing mold growth is to control all moisture problems.