Virginia Beach Crawlspace Encapsulation

Vapor Barrier Installation

Vapor Barrier Crawl Space

We believe that a professional vapor barrier crawl space installation is what is most important as this is the first link of defense in fighting moisture and humidity in your crawl space and subsequently your home. If installed properly it will greatly reduce the moisture that permeates into your crawl space from the damp (or wet) ground below. Additionally, it along with other measures can provide a cost effective alternative to crawl space encapsulation which in most cases is unnecessary.

This barrier provides a protective coating to the crawlspace ground and around the foundation to help reduce:

The key to an efficient vapor barrier is to cover as much exposed ground as possible. It must be tight, wall to wall and cut and sealed around the piers.

Crawl Space Moisture Barriers

In Chesapeake and the Tidewater area, our vapor barrier installations are unique to each crawl space because each space is different, but our process is the same. This produces a clean and efficient space.

  • We precisely cut and install around piers.
  • We install over, around, or under obstacles.
  • We position under maintenance pipes or lines.
  • We install wall to wall.
  • We pin the vapor barrier down over the entire crawl space.

We can also install vapors barriers up the interior of the outer foundation wall where applicable.

While it may seem like a job for a do-it-yourselfer, it’s not.

For years builders have always sought ways to reduce the amount of ground moisture infiltration that affects crawl spaces. Installing vents in the crawl space, while being helpful, were not that effective, even if they were power vents. De-humidification units are not that effective because all they do is continuously dehumidify an endless amount of moist air. 


After any drainage or water issues have been resolved and verified, then we will put down a vapor barrier.  The chief function of a vapor barrier is to retard or block the amount of water vapor being emitted from the ground itself. And when installed correctly it can even help reduce the harmful effects of radon gas incursion in area where that is a problem. The vapor barrier membranes are flexible and thin materials. Most vapor barriers plastic sheeting comes in 6, 8, 10, 12, or 20 mil thicknesses. At Gilbert and Son we use the thickness required by the Virginia Beach code which is typically all that is ever necessary. Unless of course your crawl space gets a lot of foot traffic or you use it for storage, etc., then we will be happy to supply you with thicker grades. But this is unnecessary 99% of the time and is just an additional expense to the home owner.


Call Gilbert & Son today and let’s discuss your needs. 757-495-6669

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    Crawlspace Vapor Barrier FAQ's

    Is A Vapor Barrier Neccessary in Crawl Spaces?

    Yes.  You need a water barrier installed in your crawlspace. In fact, a moisture barrier is the minimum amount of protection you should have in your crawlspace. The chief function of a vapor barrier is to retard the migration of Volatile Organic Compounds (VOCs) that are emitted as gases from the soil or water beneath your home.

    What size Vapor Barrier is Code?

    The membranes are typically flexible and thin materials and most vapor barrier sheeting comes in  6, 8, 10, 12 or 20 mil with 6 mil being code.

    Vapor Barrier Pictures

    G&S 5 star review

    "I called Gilbert and Son for a Second Opinion and I'm Glad I did." - Bradley Jones

    "Had some structure issues in my crawl space so originally I called a local termite company, they came out and said I had a eight rotted beams and a bunch of broken floor joists. They gave me a $20,000 estimate so I called Gilbert and Son for a second opinion. The owner Mike came out and looked in the crawl space and informed me that I had one rotted beam and two broken floor joists and then explained why that was causing my floor to sink. They were able to fix everything and install a new vapor barrier for under five grand. I’m so happy I called them and escaped being ripped off by the termite company. The technician Paul and his helper were very clean and professional and did a wonderful job. Highly recommend this company. Keep up the great work guys!"

    G&S 5 star review

    "I highly recommend this company to anyone in need of mold or crawl space work." - Etta S.

    I called because I had the smell of mold in my house and standing water in my crawl space. Gilbert and Son came out and did a free estimste. After I booked the job, they were on time professional, and cleaned up after themselves. The work and price was spot on. I highly recommend this company to anyone in need of mold or crawl space work.

    G&S 5 star review

    “My cough cleared up after they fixed my crawlspace” - Janet

    My crawl space had a great deal of mold, so Gilbert & Son installed a great deal of sand to fill in low spots and put down a vapor barrier. They were terrific, and an added benefit was that a cough I had had for months cleared up shortly after that. (Apparently, I have a mold allergy.) All the work was done professionally, as promised.

    50 years of providing safe and healthy homes to the Hampton roads community including virginia beach, norfolk, and chesapeake VA as a top contractor for mold, moisture and Foundation repair and remediation

    Call Now to Schedule Your Estimate: 1-757-495-6669