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How to prevent mold

The key to mold control is moisture control.

water stained ceiling with mold

Follow these steps to keep mold at bay

  • Don't wait to fix leaks (even small ones). Address them as soon as you notice an issue.
  • Put a plastic cover over dirt in crawl spaces to prevent moisture from coming in from the ground.
  • Use exhaust fans in bathrooms and kitchens to remove moisture.
  • Vent your clothes dryer to the outside.
  • Turn off certain appliances (such as humidifiers or kerosene heaters) if you notice moisture on windows and other surfaces.
  • Use dehumidifiers and air conditioners, especially in hot, humid climates, to reduce moisture in the air.
  • Raise the temperature of cold surfaces where moisture condenses.
  • Use insulation or storm windows.
  • Increase air circulation by using fans and by moving furniture from wall corners to promote air and heat circulation and keep doors open between rooms.
  • Carpet on concrete floors can absorb moisture and serve as a place for biological pollutants to grow - use area rugs which can be taken up and washed often.
  • Dry water-damaged areas and items within 24-48 hours to prevent mold growth.

What you can do about it

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