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Americover | Plastic Sheeting Supplier for Construction and Horticulture

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crawl space encapsulation

How Long Do Crawl Space Vapor Barriers Last?

crawl space encapsulation

What is a Crawl Space Vapor Barrier?

A crawl space vapor barrier is installed in areas of buildings such as basements to protect the base of a residential building from the moisture that comes from the ground, from excessive rainwater, and the water in the air.

Crawl space vapor barriers can be installed on the interior or exterior of a crawl space, depending on the climate where the structure is located. The temperature and humidity of the climate will also determine plastic sheeting specifications and installation.

The installation of a vapor barrier depends on the material, build, and size of the crawl space. Typically, it is secured with a two-sided, airtight tape, overlapped to prevent leakages and then secured to the ground with stakes or fasteners.

Read more: Crawl Space resources.

How Long Does a Crawl Space Vapor Barrier Last?

Crawl space vapor barriers are meant to last many years. The amount of moisture, sunlight, and debris that they encounter might have an impact on the life of the plastic sheeting.

Pests and insects, especially those attracted to water, can slowly wear down your sheeting. If you live in a particularly harsh weather environment, it may be beneficial to inspect your crawl space or basement every so often to catch problems before they arise.

When to Replace Your Crawl Space Vapor Barrier

Builders and homeowners should look for these signs indicating it may be time to replace their crawl space vapor barrier.

Mold, Mildew, or Rot

Vapor barriers keep moisture out while being permeable enough to allow the crawl space to dry if water should get in. A rotting crawl space is a sign that there is no vapor barrier or that the barrier is not doing its job, and should be replaced.

Flooding

Standing water can be devastating for a building structure. If there is continuous water in the crawl space area that is not properly drained, the vapor barrier may need to be replaced. If the leakage or water problem is coming from inside the building, it should be resolved before replacing the sheeting.

Animals and Pests

If insects like termites have infested your crawl space, they may be attracted to the moisture. Bigger wildlife may nest in the crawl space if there are breaches in the plastic. Infestations should be terminated before installing new plastic sheeting.

What Plastic Sheeting Do I Need?

Because builders and homeowners want to let moisture out, as well as keep moisture from getting in, it is important to not just choose the lowest permeability, but to choose a plastic sheeting with permeability that matches the appropriate climate. Dryer climates prefer ultra low permeability, like VaporBlock® Vapor Barrier, while humid climates will need slightly higher permeability, like in Americover’s PRO Crawl Barrier.  Protect your project from mold caused by moisuture build up by choosing a high performance vapor barrier like the Pro Crawl Anti-Mold Vapor Barrier with MPT™.

Products Mentioned

VaporBlock® Vapor Barrier pro crawl vapor barrier

Learn more about VaporBlock® Vapor Barrier.

Learn more about Americover’s PRO Crawl Barrier

Learn more about Pro Crawl Anti-Mold Vapor Barrier with MPT™.

 

Trusted by Growers, Builders, and Distributors

Americover is the smart source for plastic and polyethylene sheeting. Trusted by contractors and distributors across construction and agriculture industries, our American-made products combine reliability with quality and innovation. 

As an Americover customer, you will receive the personalized support of a dedicated account manager to simplify the ordering process and ensure the best solution for every one of your projects. Our friendly, knowledgeable staff is here to answer your questions and fulfill orders Monday-Friday from 7 a.m. to 4:30 p.m. Pacific Standard Time. If you would like to speak with a representative, call us at 760-388-6294 or contact us.

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