Mold Prevention Tips



  • Keep the building clean and dry. Dry wet or damp areas within 48 hours.

  • Fix leaky plumbing and leaks in the building envelope as soon as possible.

  • Watch for condensation and wet spots. Fix the sources of moisture problems as soon as possible.

  • Prevent moisture due to condensation by increasing surface temperature or reducing the moisture level in air (humidity). To increase surface temperature, insulate or increase air circulation. To reduce the moisture level in air, repair leaks and increase ventilation (if outside air is cold and dry), or dehumidify (if outdoor air is warm and humid).

  • Keep heating, ventilation and air conditioning (HVAC) drip pans clean, flowing properly and unobstructed.

  • Vent moisture generating appliances, such as dryers, to the outside where possible.

  • Maintain low indoor humidity, below 60 percent relative humidity (RH), ideally 30 percent to 50 percent, if possible.

  • Perform regular building and HVAC inspections and maintenance as scheduled.

  • Don't let foundations stay wet. Provide drainage and slope the ground away from the foundation.

  • If you are not experienced with home/building repairs you may want to consult a professional when making repairs, or for assistance with mold-prevention-related changes to your home/building.

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