Proper Cleanup Following Hurricanes Can Reduce Mold, Minimize Health Risks

Federal Emergency Management Agency

U.S. Virgin Islanders could encounter dangerous mold while cleaning up their homes after hurricanes Irma and Maria. Survivors can successfully remove mold and protect themselves and their families by taking a few basic precautions.

You should assume you have mold growth if your home was flooded during one or both storms and you were unable to dry it out within 48 hours, according to the Federal Emergency Management Agency (FEMA) and other disaster response officials. The same goes for furniture and other household items that may have been soaked by floodwaters or heavy rain. Stagnant water and wet materials are ideal breeding grounds for mold.

In such cases, completely dry everything, clean up the mold, and make certain the moisture problem is eradicated.

People with breathing problems, like asthma, or who have weakened immune systems should stay away from moldy sites. Children should not take part in disaster cleanup work.

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The basic rule is: if you can see or smell mold, take steps to eliminate the excess moisture. Proceed with cleanup using the following tips:

    Put on personal protective equipment: at a minimum get an N-95 respirator, boots, goggles and rubber gloves.

    Remove standing water and wet materials. Use a wet vacuum to remove water from floors, carpets and hard surfaces. Dry the home and everything in it as quickly as possible.

    Open all doors and windows when working and leave as many open as is safe when you leave.

        Open inside doors, especially closets and interior rooms, to let air flow to all areas. Take doors off their hinges if you need to.

        Open kitchen cabinets and bathroom vanity doors; remove drawers, wipe them clean and stack them to dry.

        Open the attic access to let air flow to the attic. Before you open the attic door, make sure nothing will fall on you.

  1. When electricity is safe to use, use fans and dehumidifiers to remove moisture. Do not use fans if mold has already started to grow because the fans may spread the mold.
  2. Clean with water and a detergent. Remove all mold you can see. Dry right away.
  3. If you use cleaning products, do not mix cleaning products together. Do not mix bleach and ammonia because it can create toxic vapors. If using bleach, use no more than one cup of household bleach per gallon of water.
  4. Painting or caulking over mold will not prevent mold from growing. Fix the water problem completely and clean up all the mold before you paint or caulk.
  5. Throw away items that can’t be cleaned and dried. Throw away anything that was wet with flood water and can’t be cleaned and dried completely within 24 to 48 hours. If you have precious items that you want to preserve, follow these guidelines from the Smithsonian Institute: www.si.edu/mci/english/learn_more/taking_care/mnm.html.

Ensure mold cleanup is complete before reoccupying your home. 

For more information on mold and cleanup, see FEMA’s printable brochure “How to Prevent Mold After a Flood” at www.fema.gov/library/prepandprev.shtm and the “Homeowner’s and Renter’s Guide to Mold Cleanup After Disasters” at: http://wcms-wp.cdc.gov/mold/pdfs/Homeowners_and_Renters_Guide.pdf.

The CDC Web site includes information regarding mold health hazards as well as prevention, clean up and remediation guidance: https://www.cdc.gov/mold/cleanup.htm.

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