Q: I read your online response about crawl space vents. I found it very informative. I reside on the coast. My house is located on a lagoon off the inner coastal waterway. The crawl space floor is concrete. There are 10 air vents that measure 8-by-16 inches. I use to open them in the summer and close them in the winter. I was thinking about leaving them closed in the summer to keep out the humidity. Keeping them closed may also diminish the amount of sweating with my HVAC metal ductwork located in the crawl space. The summer temps usually hit between 80 and 100 degrees with 70 to 100 percent humidity.
C. Dwight Barnett is a certified master inspector with the American Society of Home Inspectors. Reach him at d.Barnett@insightbb.com.