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Crawl Space Vapor Barrier Installation

Finished, clean, dry crawl space.

Crawl space water and humidity are annoying, as they cause significant damage to your home and pose health risks. 

Seal out moisture with AquaStop™ CrawlSeal™ from JES Foundation Repair, the leader in crawl space repair throughout the mid-Atlantic region.

As your regional experts in crawl space encapsulation, we deliver a moisture barrier that ensures the health and durability of your home. 

This page outlines the benefits of maintaining a dry and professionally encapsulated crawl space. 

What is a Crawl Space Vapor Barrier? 

worker walking holding crawl space vapor barrier

A crawl space vapor barrier is a heavy-duty plastic sheet that covers the walls and floors of crawl spaces. 

This liner manages excessive moisture and protects against crawl space water vapor permeation. Vapor barriers prevent mold growth, wood rot, and pest invasions. 

JES Foundation Repair utilizes the CrawlSeal™ system, a sturdy, layered liner designed to preserve your home’s structure from the adverse effects of moisture. This barrier is a comprehensive solution for maintaining home health. 

Signs You Need a Crawl Space Vapor Barrier Installation

Recognizing a problem is the first step in repair. Signs inside and outside the crawl space provide clues. Ignoring issues results in costly future repairs. 

Common problem signs include:

These symptoms indicate excessive moisture and potential structural damage, so it’s crucial to contact a professional like JES Foundation Repair. With decades of experience in crawl space repair, you can trust that you’re in good hands and that the job will be done right the first time.

Is a Crawl Space Vapor Barrier Installation Necessary? 

Yes, installing a vapor barrier is essential if your crawl space shows signs of dampness or humidity. Neglecting to install a vapor barrier allows moisture seepage and damage.

JES Foundation Repair recommends professional encapsulation solutions as part of a comprehensive approach to home health. 

DIY installations are discouraged, as standard liners from hardware stores are often inadequate and may result in further damage and costly future repairs. Additionally, working inside crawl spaces poses safety risks, making it safer to rely on trained professionals with appropriate equipment and safety gear. 

What Are the Benefits of a Crawl Space Vapor Barrier? 

Employing a vapor barrier to control moisture offers several advantages, such as: 

  • Enhanced Indoor Air Quality: The CrawlSeal™ barrier blocks moisture ingress, reducing mold and improving air quality inside your home. 
  • Strengthened Structural Integrity: A dry crawl space means a more stable foundation for your house. 
  • Improved Energy Efficiency: A well-insulated, moisture-free crawl space heightens energy savings. 
  • Pest Deterrence: Moist crawl spaces attract pests like termites. A vapor barrier creates a less appealing environment for these pests. 

Our CrawlSeal™ liner is durable, antimicrobial, and puncture-resistant, ensuring your crawl space remains clean, dry, and healthy. 

How We Install a Crawl Space Vapor Barrier 

A vapor barrier is crucial to the crawl space encapsulation system, but is just one component of the overall process. Here’s an overview of the encapsulation process and how installing a vapor barrier is essential for its success. 

Crawl space vapor barrier being installed.

Trust JES Foundation Repair for a dependable, long-lasting vapor barrier installation. 

Why Our Crawl Space Vapor Barrier is the Best Choice for Your Home 

The CrawlSeal™ system from JES Foundation Repair excels with these features: 

  • Exceptional 20-mil thickness 
  • Antimicrobial characteristics 
  • Resistance to mold, mildew, and punctures 
  • Custom sizing for diverse surface adaptations 
  • Reflective white finish for a brighter space 
  • Comprehensive, transferable warranty 
  • Continuous protection with annual maintenance 

Contact JES Foundation Repair for Crawl Space Encapsulation Today! 

man inspecting crawl space with flashlight

Eliminate the negative effects of a damp crawl space. Trust JES Foundation Repair for a dry, healthy space with our CrawlSeal™ vapor barrier installation.

Homeowners in the mid-Atlantic region have trusted us for over three decades. Contact us for a free crawl space inspection.

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    Crawl Space Vapor Barrier FAQs

    We strongly advise against DIY installations, which can be risky, costly, and ineffective. Professional installation ensures a proper fit and sealing of the vapor barrier, and allows for a thorough evaluation of your crawl space for any other concerns. Reach out to JES Foundation Repair for a no-cost crawl space inspection and encapsulation quote.

    Installation times vary based on crawl space size, existing conditions, and necessary repairs. We prioritize efficient, quality work, typically completing installations within one to two days. Contact JES Foundation Repair to schedule a free inspection, obligation-free estimate, and a precise time estimate.

    The vapor barrier requires minimal upkeep, but we provide an annual service plan to ensure its continued effectiveness. We inspect the crawl space and its existing solutions, including the vapor barrier, to confirm ongoing protection. Get in touch to learn more and arrange a complimentary inspection

    JES Foundation Repair service area map of the Mid-Atlantic region.

    Our Locations


    8361 Town Center Ct
    Nottingham, MD 21236


    311 Central Rd.
    Suite 2-02
    Fredericksburg, VA 22401

    Hampton Roads & NE NC

    2569 Quality Ct
    Virginia Beach, VA 23454

    Northern VA & DC

    7940 Gainsford Ct.
    Bristow, VA 20136


    309 Quarles Rd
    Ashland, VA 23005

    Southwest Virginia / Roanoke

    2033 Cook Dr.
    Salem, VA 24153

    Western Virginia

    456 Old Courthouse Rd
    Appomattox, VA 24522


    45 W Boscawen St,
    Winchester, VA 22601