what is the correct humidity for a basement
Basements or crawl spaces. Basements are often overridden with moisture. There is often a substantial amount of moisture coming through the concrete. Some houses can have up to 100 pints of humidity that needs to be removed per day, most of it coming through the basement in some cases. For a basement, it is recommended to keep moisture at least under 65% although the optimal room humidity would be between 40%-50%.