Leigh Plumbing

Never Underestimate the Dangers of Water Damage and Mold 

 Plumbing Tip # 10  

Potential health effects and symptoms associated with mold exposures include allergic reactions, asthma, and other respiratory complaints.  

1. There is no practical way to eliminate all mold and mold spores in the indoor environment; the way to control indoor mold growth is to control moisture.
   
2. If mold is a problem in your home or school, you must clean up the mold and eliminate sources of moisture.
   
3. Fix the source of the water problem or leak to prevent mold growth.
   
4. Reduce indoor humidity (to 30-60% ) to decrease mold growth by: venting bathrooms, dryers, and other moisture-generating sources to the outside; using air conditioners and de-humidifiers; increasing ventilation; and using exhaust fans whenever cooking, dish washing, and cleaning.
   
5. Clean and dry any damp or wet building materials and furnishings within 24-48 hours to prevent mold growth.
   
6. Clean mold off hard surfaces with water and detergent, and dry completely. Absorbent materials such as ceiling tiles, that are moldy, may need to be replaced.
   
7. Prevent condensation: Reduce the potential for condensation on cold surfaces (i.e., windows, piping, exterior walls, roof, or floors) by adding insulation.
   
8. In areas where there is a perpetual moisture problem, do not install carpeting (i.e., by drinking fountains, by classroom sinks, or on concrete floors with leaks or frequent condensation).
   
9. Molds can be found almost anywhere; they can grow on virtually any substance, providing moisture is present. There are molds that can grow on wood, paper, carpet, and foods.

• MOISTURE CONTROL IS KEY
• 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.

Information from US Environmental Agency: http://www.epa.gov/mold/moldresources.html

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