Crawl Space Moisture Barrier

The CrawlSeal™ Crawl Space Vapor Barrier is the heart and soul of the CrawlSeal™ system. It is a durable liner that is installed in your crawl space and is designed to keep your crawl space clean and dry to protect it from any moisture, mold, or pest issues.

The liner material is a thick plastic that is tear-proof and puncture-proof but is covered by a 25-year warranty to protect you from future wear and tear. It also comes with a mold-resistant “UltraFresh” additive to prevent mold or mildew from ever growing.

To have your crawl space inspected, contact us today to get it scheduled! We serve customers throughout all of central Missouri and Eastern Kansas, including Kansas City, Columbia, Moberly, and Springfield.

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Benefits of Crawl Space Encapsulation

The CrawlSeal™ Crawl Space Vapor Barrier installation is quick and is mechanically fastened to the wall by attaching it with plastic pegs. Installing a crawl space vapor barrier is one of the most cost-effective ways to improve your home and prevent the need for future crawl space repairs.

The stack effect is a phenomenon that allows the air in your crawl space to seep through the floorboards and infiltrate your home. If your crawl space is dirty and the air quality is low, it could allow contaminated air to enter your home and leave you and your family with allergy or asthma symptoms. A vapor barrier will keep your crawl space air clean and prevent the stack effect from negatively impacting your home.

As an additional benefit, the CrawlSeal™ crawl space vapor barrier acts as a passive radon mitigation system. It is also compatible with your active radon mitigation system as well as products such as crawl space sump pumps and the Foundation Recovery Systems dehumidifier.

Sealing Your Crawl Space

  • Controls mold & rot
  • Save money on utilities
  • Keeps away pests/insects
  • Passive radon mitigation
  • Seals away odors
  • Increased comfort – no drafty floors
  • Increases home value
  • Additional storage space

Before and After Installing Moisture Barrier:


Moisture that enters the crawl space through vents and soil can ruin insulation and also encourage mold growth and wood rot.


Covering the crawl space floor and walls with a heavy-duty moisture barrier eliminates moisture problems, makes the living space more comfortable and cuts heating & cooling costs.