The Stack Effect

Crawl spaces and basements are well known for being damp, dank spaces. Even when your home has no groundwater flooding issues and has perfect plumbing, the spaces can be plagued by moisture issues. One major culprit for humidity in your home is a phenomenon called the “stack effect“.

The stack effect refers to the process in which hot air leaves the home through your attic and upper levels. As it does, a vacuum is created below, and new air is pulled upwards through the basement, crawl space, and lower levels.

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