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Toxic Mold: Schools & Mold and Indoor Air Quality
The Agency's premier resource on this issue is the Indoor Air Quality Tools for Schools kit. Our schools-related resources on the web start at: epa.gov/iaq/schools.
The asthma companion piece for the IAQ Tools for Schools kit, titled, "Managing Asthma in the School Environment" has been recently published. This publication has a section entitled, "Clean Up Mold and Moisture Control".
Here is an excerpt from IAQ Tools for Schools kit companion piece, "Managing Asthma in the School Environment":
Common Moisture Sources Found in Schools
Moisture problems in school buildings can be caused by a variety of conditions, including roof and plumbing leaks,
condensation, and excess humidity. Some moisture problems in schools have been linked to changes in building
construction practices during the past twenty to thirty years. These changes have resulted in more tightly sealed buildings
that may not allow moisture to escape easily. Moisture problems in schools are also associated with delayed maintenance
or insufficient maintenance, due to budget and other constraints. Temporary structures in schools, such as trailers and
portable classrooms, have frequently been associated with moisture and mold problems.
Suggestions for Reducing Mold Growth in Schools
Reduce Indoor Humidity:
- Vent showers and other moisture-generating sources to the outside.
- Control humidity levels and dampness by using air conditioners and de-humidifiers.
- Provide adequate ventilation to maintain indoor humidity levels between 30-60%.
- Use exhaust fans whenever cooking, dishwashing, and cleaning in food service areas.
Inspect the building for signs of mold, moisture, leaks, or spills:
- Check for moldy odors.
- Look for water stains or discoloration on the ceiling, walls, floors, and window sills.
- Look around and under sinks for standing water, water stains, or mold.
- Inspect bathrooms for standing water, water stains, or mold.
- Do not let water stand in air conditioning or refrigerator drip pans.
Respond promptly when you see signs of moisture and/or mold, or when leaks or spills occur:
- Clean and dry any damp or wet building materials and furnishings within 24-48 hours of occurrence to prevent mold growth.
- Fix the source of the water problem or leak to prevent mold growth.
- 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.
- Check the mechanical room and roof for unsanitary conditions, leaks, or spills.
Prevent moisture condensation:
Reduce the potential for condensation on cold surfaces (i.e., windows, piping, exterior walls, roof, or floors) by adding insulation.
Floor and carpet cleaning:
- Remove spots and stains immediately, using the flooring manufacturer’s recommended techniques.
- Use care to prevent excess moisture or cleaning residue accumulation and ensure that cleaned areas are dried quickly.
- 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).
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Above article Copyright © Environmental Protection Agency (EPA). Reprinted with permission.
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