Crawlspace ventilation - open or sealed?

Started by John Raabe, December 05, 2005, 01:38:19 AM

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John Raabe

Traditionally crawlspaces have been vented to the outside through code required air vents.

Now research is showing that sealed crawlspaces with a poly moisture barrier over the soil often have lower humidity and fewer moisture problems than vented crawlspaces. This is especially true in high humidity climates.

Here is a good resource on the subject. Check for your climate suggestions and perhaps ask your building inspector what the requirements are for your area. (Thanks, Ryan!) —http://www.advancedenergy.org/buildings/knowledge_library/crawl_spaces/
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