Rigid foam in enclosed crawl space
I line in Northern Virginia around the DC suburbs and have an enclosed crawl space. I sealed up all the vents properly and have hired a company to install new 20mill plastic and rigid foam. Our crawls space does not take on any water however the only moisture I see is under the plastic in the form of dew. The Crawlspace company advised to install rigid foam board on the concrete block to insulate the space. My question is, if they install the rigid foam board, how will my concrete block dry out in the event it gets saturated by heavy rains? Won’t mold grow behind the foam board? Then I have a worse problem. I’m thinking to not install the foam board so that I can see when water is penetrating my crawl space. Any advise on this??????
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