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Crawl Space Barrier
How to Install a Crawl Space Barrier
By: Mark J. Donovan
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A crawl space
barrier can dramatically reduce moisture levels in your crawl space. A crawl
space barrier used in conjunction with crawl space vents can help protect
your home from mold, mildew and rot.
Crawl spaces
are frequently used instead of concrete slabs or full basements to support a
home. They are typically unfinished and provide access to electrical wiring
and plumbing pipes. |
If however a crawl
space barrier, crawl space vents and insulation are not installed properly a
home could be at risk of damage. Due to the fact that crawl spaces are in
contact with the ground, and frequently have earth floors, high moisture levels
can exist in crawl spaces if crawl space barriers are not installed. The high
moisture levels can lead to condensation to form on a home’s floor joists and
sills which overtime can lead to rot and decay.
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Installing a crawl
space barrier is inexpensive and easy to do. All you need is a large sheet of 6
mil polyethylene plastic, duct tape and a few bricks. Sand and crushed stone are
also helpful, but not critical.
To install a crawl space barrier,
simply lay the plastic sheet over the floor of the crawl space. Allow the
plastic sheet to lap up the sides of the crawl space walls by at least 12
inches and secure the edges of the crawl space barrier to the crawl space walls
with duct tape.
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| If there are any seams in the polyethylene
plastic make sure to tape them as well. Finally strategically place several
bricks in the corners of the crawl space to hold the crawl space barrier
snuggly up against the crawl space walls. That’s it. You’ve installed a
crawl space barrier. To protect the crawl space barrier from becoming
ripped or damaged, and as an alternative to using bricks, apply a 1 to 2
inch layer of sand over the crawl space barrier. Additionally you can put a
thin layer of crushed stone on top of the sand. |
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