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Indoor Air Quality - Mold

Mold is a fungus that grows in damp environments. There are many colors and varieties of mold, but they all reproduce by releasing spore into the air. While individual mold spores are microscopic, colonies of mold growth are visible to the naked eye.

Many types of mold exist, and they all have the potential to cause adverse health effects. Some types of mold are known to produce toxins that can cause adverse health effects. Others can trigger allergic reactions. Mold can trigger different reactions in different people at different thresholds. And some people may have no reaction at all. Because of these variations, there are no recognized standards for allowable levels of mold in the air. Our county follows the EPA recommendation: if you can see it, you need to get rid of it (need to correct the problem). The key to mold prevention is to control the moisture. Dry all water damaged surfaces within 24-48 hours to prevent mold growth. After drying, clean, disinfect and dry these surfaces. In addition, keep humidity levels low, ideally between 30%-50%.

To reduce your exposure to indoor mold, install and operate a dehumidifier as needed. Repair all leaking plumbing. Use exhaust fans in the kitchen and bathroom. Empty water trays in air conditioners, refrigerators and dehumidifiers frequently. Clean cool mist and ultrasonic humidifiers in accordance with manufacturer’s instructions, refill with clean water daily and use only when needed. Clean and dry or remove water damaged carpets.

In addition, here are some tips to keep exterior water from getting to the interior of your home:

  • Install and extend downspouts to carry rain water away from the house.
  • Seal all foundation cracks.
  • Repair all roof leaks/damage.
  • Direct water flow away from the foundation and toward the yard using landscape techniques.
  • Verify that the sump pump is in working order and have a back up plan in case of power outage.
  • Maintain your home in good repair.

What to do if you suspect your home has a mold problem?

Look for/determine the source of excess moisture and then correct the problem. This may involve repairing leaking plumbing, repairing roof leaks, repairing or extending downspouts, sealing/insulating gaps around windows and doors, installing a dehumidifier if needed, etc. Then clean and dry all hard surface areas that can be cleaned. It is recommended that you remove and replace water damaged items such as insulation, ceiling tiles, books and papers. Drywall should be removed if there is obvious swelling or the seams are no longer in tact. Carpets and padding with excessive damage or visible mold growth should also be removed.

Links to more information:

EPA Mold Resources

CDC Website on Mold

Controlling Mold Growth In The Home

A Brief Guide To Mold, Moisture, and Your Home