With Jonesboro hitting 85°F and 70% humidity this week, your crawl space is about to become a moisture magnet.
Most Northeast Arkansas homes have vented crawl spaces that pull in humid outside air. That 70% humidity condenses on cooler surfaces like ductwork and floor joists, creating the perfect environment for mold and wood rot.
The math is simple: when 85°F air at 70% humidity hits a 65°F surface (like your AC ducts), you get condensation every time. That's basic dew point physics.
A proper 6-mil polyethylene vapor barrier on your crawl space floor stops ground moisture from adding to the problem. But here's what most contractors miss — you need to seal the seams with tape and run the barrier 6 inches up the foundation walls.
We just finished a crawl space in Trumann where the homeowner's energy bills dropped 18% after we installed a complete vapor barrier system. The difference? We sealed every seam and addressed the rim joist area too.
Skip the vapor barrier, and you're looking at potential structural damage, higher energy costs, and indoor air quality issues. Arkansas humidity doesn't take summers off.
Thinking about crawl space moisture control? Reply or DM us for a free assessment of your vapor barrier needs.