Memorial Day weekend marks the start of serious humidity season in Northeast Arkansas. If your crawl space doesn't have proper vapor barrier protection, you're about to find out why moisture control matters.
A 6-mil polyethylene vapor barrier on your crawl space floor blocks ground moisture from rising into your home. Without it, soil moisture evaporates upward at roughly 10-15 pounds per day in a typical 1,200 SF crawl space. That's like dumping 2 gallons of water into your home's air every single day.
The IRC requires vapor barriers in crawl spaces (Section R408.2), but many older Jonesboro and Trumann homes were built before this became standard. Signs you need one: musty odors, visible mold on floor joists, warped hardwood floors above, or unusually high cooling bills.
Proper installation means sealing seams with tape, running the barrier 6 inches up foundation walls, and ensuring complete ground coverage. Combined with crawl space insulation, a good vapor barrier drops indoor humidity by 15-20% and cuts cooling costs significantly.
We're seeing more calls for crawl space encapsulation as homeowners realize the connection between ground moisture and comfort problems upstairs. The investment typically pays for itself in 3-4 years through lower energy bills and prevented moisture damage.
Reply or DM us for a free crawl space moisture assessment before the real heat arrives.