Crawlspace Moisture and High Summer Humidity
Most older homes in Wilmington are built on pier-and-beam foundations with open crawlspaces. During spring and summer, hot, humid air enters crawlspace vents and hits cool ductwork and floor joists, condensing into liquid water. This constant dampness rots wood, sags subfloors, and fuels mold growth. To protect your home, ensure your crawlspace has a high-quality, 6-mil or thicker vapor barrier covering 100 percent of the ground. Keep vents clear, or consider a full crawlspace encapsulation with a dedicated dehumidifier to control moisture levels permanently.
