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850 Health Hazards in Construction
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Ten Things You Should Know About Mold

  • Potential health effects and symptoms associated with mold exposures include allergic reactions, asthma, and other respiratory complaints.
Mold on wall and corner of a room
Mold can be found anywhere, providing moisture is present.
  • There is no practical way to eliminate all molds and mold spores in the indoor environment; the way to control indoor mold growth is to control moisture.
  • If mold is a problem in your workplace, you must clean up the mold and eliminate sources of moisture.
  • Fix the source of the water problem or leak to prevent mold growth.
  • Reduce indoor humidity (to 30-60%) to decrease mold growth.
  • Clean and dry any damp or wet building materials and furnishings 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.
  • Prevent condensation on cold surfaces by adding insulation.
  • In areas where there is a perpetual moisture problem, do not install carpeting.

Remember, molds can be found almost anywhere; they can grow on virtually any substance, providing moisture is present.

Knowledge Check Choose the best answer for the question.

3-5. To decrease mold growth, the indoor humidity should be reduced to _____.