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Humidity

Crawl Space Mold Removal: Humidity

Maintaining a humidity level of about 55 percent in your crawl space keeps the air healthy. Maintain a humidity level in your crawl space of less than 50%, as greater levels can lead to condensation, which raises humidity levels even higher. Depending on how humid it is, use fans or dehumidifiers to reduce humidity.


Mold grows in crawl spaces at what humidity?

Approximately 26% increase in the relative humidity of the air in the crawl space (from 51 percent outside to 76 percent in the crawl space). Mold starts to grow at 60 percent relative humidity.


How long does it take for mold to die in low humidity?

To prevent mold from forming, the humidity level in the residence should be between 35 and 50 percent. Dehumidifiers take at least a week to remove enough moisture because they start slowly, but lowering the humidity will only prevent mold from spreading.


Is it possible to become sick from mold in a crawl space?

Mold can send deadly tiny spores into the living room when it takes over the crawl space. Inhaling them can cause a variety of issues, including itchy eyes, asthma, bronchitis, and even migraines in you or your loved ones. Mold can also make it difficult for your loved ones to breathe.


What is the ideal humidity level for mold prevention?

Humidity or dampness (water vapor) in the air can sometimes provide enough moisture for mold to thrive. Indoor relative humidity (RH) should be kept below 60%, ideally between 30% and 50%, if at all possible.


Is it true that air purifiers can help with mold?

During the first cleanup, an air purifier can assist lower the number of spores in the air, though filters may need to be changed frequently. Right after the cleanup, an air purifier can assist remove any remaining mold particles. An air purifier can also aid in frequent mold-prone areas of the house, such as the basement.


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