What kind of waterproofing can you use in crawlspaces to help with going green?

Asked by Michael Deal
Charlotte, NC

Should it be a sealed or stone type material lining the crawl?


Danny Kelly

Answered by Danny Kelly

Charlotte, NC

Kelly McArdle Construction

August 30, 2010

It sounds like you are asking about a vapor barrier.

  • A properly installed vapor barrier will prevent excessive moisture from entering your crawlspace through the ground or the foundation walls.
  • We recommend a minimum of a 6-mil poly installed over 100% of the crawl floor with overlapping seams of 12" and continue the vapor barrier up the crawlspace walls until it is above the exterior grade.


For more information:

Check our basement moisture Q&A to see what other homeowners and contractors are saying about vapor barriers, insulating foundation walls, etc.

Tagged In: basement moisture, vapor barrier

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