Memorial Day weekend marks the start of serious humidity season in Northeast Arkansas. While you're firing up the grill, moisture is quietly infiltrating your crawl space.
Without a proper vapor barrier, that 6-mil poly sheeting or sealed encapsulation system, here's what happens: Humid outdoor air (often 80%+ relative humidity in Jonesboro summers) enters your crawl space and condenses on cool surfaces like ductwork, floor joists, and band boards.
The result? Mold growth within 48-72 hours, wood rot over months, and your HVAC system working 20-30% harder to cool your home. We've measured crawl spaces hitting 95% humidity without barriers — basically a swamp under your house.
IRC R408.2 requires ground cover vapor retarders in vented crawl spaces, but the code minimum (6-mil poly with taped seams) barely scratches the surface. Full encapsulation with sealed 12-mil barriers, closed vents, and conditioned air creates a true moisture-controlled environment.
Last month we encapsulated a 1,200 SF crawl space in Trumann. The homeowner's energy bill dropped $47 the first month, and humidity readings went from 89% to 52%. The difference? No more condensation, no musty odors, and ductwork that actually stays dry.
Don't let Arkansas humidity turn your crawl space into a science experiment. A proper vapor barrier system pays for itself in energy savings and prevents thousands in future repairs.
DM us for a free crawl space moisture assessment. We'll measure humidity levels and show you exactly what's happening down there.