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Crew member working in crawl space

Vapor Barrier

Ohio Basement Authority installs the patented CrawlSeal™ vapor barrier to stop crawl space moisture problems.

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Keep your crawl space dry and mold-free with CrawlSeal™

Crew installing crawl space encapsulation
A vapor barrier in a crawl space helps control moisture and protect against mold.

If you have a dirt crawl space under your home and you’re experiencing a musty smell, feeling of dampness, or cold floors inside your home, you could benefit from adding a vapor barrier in your crawl space.

Ohio Basement Authority installs the patented CrawlSeal™ vapor barrier to stop crawl space moisture problems. CrawlSeal™ comes with a 25-year warranty against rips and tears.

For a free cost estimate on installing a crawl space vapor barrier, contact us today to schedule your on-site consultation in Columbus, Cincinnati, Springfield, Mansfield, Dayton, throughout southern Ohio and northern Kentucky.

Features of the CrawlSeal™ Liner:

  • Heavy 20-mil-thick liner – Similar to a swimming pool liner
  • Manufactured in 7 layers – Combination of high-density polyethylene for puncture resistance, low-density polyethylene for flexibility, and polyester cord for reinforcement for brute tear resistance
  • White finish brightens the crawl space and makes it easy to see that the crawl space is free of mold, insects, and dirt
  • Antimicrobial additive prevents mold from growing on the liner

How a Crawl Space Moisture Barrier Works

A vapor barrier does exactly what its name says: it provides a barrier against water vapor. When warm air comes in contact with a cool surface, condensation forms. When this happens inside the crawl space, the moisture can lead to mold growth, cause wood beams to rot, and attract pests.

A vapor barrier slows or prevents ground water seepage from evaporating into the crawl space air. For a crawl space to stay dry, it’s also important to make sure there’s proper drainage and keep gutters and downspouts clear of debris.

Our Crawl Space Vapor Barrier Installation Process

  • Wood and organic materials are removed.
  • Rocks are removed and uneven surfaces are leveled (depending on condition).
  • The CrawlSeal® liner is carefully fitted and installed on the crawl space floor and walls.
  • Drilled-in fasteners and spikes are installed to permanently hold the liner in place.
  • Edges, seams, and pipe penetrations are sealed.


Free cost estimates on CrawlSeal™ vapor barrier installation

Ohio Basement Authority is the authorized CrawlSeal® installer in Columbus, Cincinnati, Springfield, Mansfield, Dayton, throughout southern Ohio and northern Kentucky. During your on-site consultation, we’ll recommend the best crawl space moisture control strategy for your home. Contact us today to request a free cost estimate on your crawl space vapor barrier installation project.


OBA map with Cincinnati

Serving Greater Columbus, Cincinnati, Dayton, and Southern Ohio

Cincinnati Office

1270 Hillsmith Dr.
Cincinnati, OH 45215

Columbus Office
2421 McGaw Rd.
Obetz, OH 43207