Where the wild thing grows

Wherever we go there is mold. It exists in the air and on many surfaces, and has survived on the Earth for millions of years, growing wherever there is moisture. Mold is found both indoors and outdoors. Mold can enter your home through open doorways, windows, vents, and heating and air conditioning systems. Mold in the air outside can also attach itself to clothing, shoes and bags, and pets can carry mold indoors.

Mold will grow in places with a lot of moisture, such as around leaks in roofs, windows, or pipes, or where there has been flooding. Mold grows well on paper products, cardboard, ceiling tiles, and wood products. Mold can also grow in dust, paints, wallpaper, insulation, drywall, carpet, fabric, upholstery and even in our cars.

Exposure to damp and moldy environments may cause a variety of health effects, especially for people sensitive to molds. For some people, molds can cause nasal stuffiness, throat irritation, coughing or wheezing, eye irritation, or skin irritation. People with mold allergies may have more severe reactions. Immune-compromised people and people with chronic lung illnesses, such as obstructive lung disease, may get serious infections in their lungs when they are exposed to mold. These people should stay away from areas that are likely to have mold, such as compost piles, cut grass and wooded areas, and basements or outdoor sheds and garages.

In 2004 the Institute of Medicine (IOM) found there was sufficient evidence to link indoor exposure to mold with upper respiratory tract symptoms, cough, and wheeze in otherwise healthy people; with asthma symptoms in people with asthma; and with hypersensitivity pneumonitis in individuals susceptible to that immune-mediated condition. The IOM also found suggestive evidence linking indoor mold exposure and respiratory illness in otherwise healthy children.

How to limit or control mold

Inside your home you can control mold growth by:

  • Controlling humidity levels
  • Promptly fixing leaky roofs, windows, and pipes
  • Thoroughly cleaning and drying after flooding
  • Ventilating shower, laundry, and cooking areas.

If mold is growing in your home, you need to clean up the mold and fix the moisture problem. Mold growth can be removed from hard surfaces with commercial products, soap and water, or a bleach solution of no more than one cup of bleach in one gallon of water.

Mold growth, which often looks like spots, can be many different colors, and can smell musty. If you can see or smell mold, a health risk may be present. You do not need to know the type of mold growing in your home, and the Centers for Disease Control (CDC) does not recommend or perform routine sampling for molds.

No matter what type of mold is present, you should remove it. Since the effect of mold on people can vary greatly, either because of the amount or type of mold, you can’t rely on sampling and culturing to know your health risk. Also, good sampling for mold can be expensive, and standards for judging what is and what is not an acceptable quantity of mold have not been set. The best practice is to remove the mold and work to prevent future growth.

Here are some basic prevention tips for limiting or controlling mold in your home:

  • Keep humidity levels as low as you can — no higher than 50 percent all day long. An air conditioner or dehumidifier helps achieve this result.
  • Be sure your home has adequate ventilation. Use exhaust fans, if possible, which vent outside the kitchen and bathroom, and make sure your clothes dryer vents outside as well.
  • Fix leaks in your home’s roof, walls or plumbing so mold does not have access to the moisture it needs to grow.
  • Clean up your home thoroughly and quickly after any flooding.
  • Add mold inhibitors to paints before use.
  • Clean bathrooms with mold-killing products.
  • Remove or replace carpets and upholstery that have been soaked and can’t be dried promptly, and avoid using carpets in rooms like bathrooms or basements, where there’s a lot of moisture.

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Be sure to check out the CBIA Healthy Connections wellness program at your company’s next renewal. It’s free as part of your participation in CBIA Health Connections!