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Community and Q&A

Moisture protection in the crawl space

Janet Swope | Posted in General Questions on

Does the moisture protection in the crawl space ever need replacing. The one under my house is 12 years old and I was told that moisture protection covers need replacing at least every seven years. Is this true or is it a ploy for business?

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  1. Expert Member
    Dana Dorsett | | #1

    Sounds like scam to me.

    EPDM sheeting pretty much lasts forever, as does polyethylene sheeting as long as it isn't exposed to sunlight.

    What sort of moisture protection DO you have down there?

  2. GBA Editor
    Martin Holladay | | #2

    If you are talking about a layer of polyethylene covering a dirt floor, you can always assess it by looking at it. If it isn't brittle or falling into pieces when you touch it, it's probably fine. Polyethylene should stay supple and last for years, as Dana pointed out, as long as it hasn't been exposed to sunlight.

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