Seeking Advice: Sealing Crawlspace Vents/Other Penetrations
I haven’t been on the site in awhile and I’m not sure if the thinking around sealed crawlspaces has changed, so I was looking for feedback from the community. I have a property that has some high moisture levels in the crawlspace. I have a good vapor barrier and I can do some additional grading to encourage groundwater to flow away from the building, but ultimately I need to improve the crawl a bit.
This is a rental property, and a nice one, so I’m going to invest in it but I can’t afford to do a full blown sealed/closed crawlspace.
As I see it my options are to seal the foundation vents and any foundation penetrations and…
1) install a dehumidifer along with a foundation vent fan to blow air out of the crawl and encourage air to cycle from the house to the crawl and out
2) don’t install the dehu and instead purposefully allow some air from the ductwork to get piped into the crawl (to put conditioned air into it)
Thanks for any help! (especially if there are other options I’m not aware of)
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