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​Crawl space encapsulation is the process of sealing your home’s crawl space to control moisture, improve air quality, and increase energy efficiency.
WHAT IS IT AND WHY DOES IT MATTER?
Crawl space encapsulation is the process of sealing off your crawl space from ground moisture and outside air using a heavy-duty vapor barrier system. This includes installing a thick 12-mil woven plastic liner across the entire floor and extending it up the foundation walls, with all seams carefully taped and sealed for complete protection. The liner is mechanically fastened using pressure-treated furring strips and Tapcon screws to meet Ohio Department of Health requirements, ensuring long-term durability and compatibility with future radon mitigation systems if needed.
Encapsulation matters because it helps reduce moisture, mold, and mildew, improves indoor air quality, prevents wood rot and structural damage, lowers energy bills, reduces musty odors, and helps deter pests. Since up to 40–50% of the air inside your home can originate from the crawl space, keeping this area clean, dry, and sealed plays a major role in protecting your home’s comfort, efficiency, and long-term value.
BASIC VAPOR BARRIER
A basic vapor barrier is a simple moisture control solution that places plastic directly on the crawl space floor. This option helps reduce ground moisture and odors but leaves the walls and vents open, offering limited protection. It’s a cost-effective choice for mild moisture issues and typically ranges from $1,500–$3,000.
FULL ENCAPSULATION
Full encapsulation is a complete crawl space sealing system that covers the floor and walls, seals all vents, and includes dehumidification or conditioning for total moisture control. This premium solution delivers maximum protection against mold, humidity, and structural damage, improving comfort, air quality, and energy efficiency. Full encapsulation typically ranges from $5,000–$15,000+.
