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Mildew on Ceiling

Dear George,

Hi there! On the outside of my house I have mildew growing that corresponds to mildew growing on ceilings & walls on the inside second floor. What’s up???

Can’t breathe in Ohio,
Kit Doll-Shemas


Dear Kit,

If there’s moisture and an environment where mold or mildew can grow, the varieties of species which grow locally are going to show up anywhere they can gain a foothold.

It would be a good idea to check the roofing material above the moldy area for potential leaks. If you have an attic, an inspection of the roof sheathing can often provide clues to the leak point.

After the source of moisture intrusion is located and repaired, dry up the moldy area and clean it up or replace contaminated materials. Use mold-resistant-construction materials when you remediate. You might also want to make use of HEPA filtration everywhere you can–in your vacuum, air conditioning, and even a separate air filter to help remove ambient spores.

If you have your environment tested before and after remediation, you will be able to identify the types of mold to which you have become allergic (if applicable), and you will be able to tell how effective your removal efforts have been.

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