60 Humidity In Crawl Space
However 60 humidity in the crawl space should probably be the top end of your ideal crawl space humidity level.
60 humidity in crawl space. Crawl space humidity has been plaguing homes in north carolina and virginia since the first day they were built. Crawl space humidity should generally remain at or below 55. Based on this figure it is recommended that you keep humidity levels in your crawl space around or below 50.
It might ve been 60 relative humidity outside relative to a temperature of 90 f say but when that air came into the crawl space and cooled down to 75 f the relative humidity jumped up to 95. Some molds grow under humidity conditions less than 70. Most people aim for around 55 to avoid any unforeseen problems.
Humidity can enter the crawl space when saturated outside air is allowed to flow into a dry crawl space or when water is allowed to stand in the area. It may also occur when the air inside the home is cooler than the air outside the home or that in the crawl space. These problems can lead to health issues and the need for expensive repairs.
Generally they need a minimum relative humidity of 70 for growth and development. However even this number can change considerably based on several factors.