Vapor Barrier in Crawlspace
I'm currently remodeling half my house and the floors and sub floor has been removed to reveal the crawlspace. There was a torn, old plastic vapor barrier on the ground and I asked the contractor if he could remove it and replace it with a new one. He said ok, but when I checked back, they showed me how the spots that were not covered were bone dry and the spots that were covered were quite wet, almost muddy, even though it hasn't rained in months. And so they recommend that a vapor barrier not be installed because they feel it will trap the moisture and create that muddy ground. They also said they never see vapor barriers in crawl spaces on jobs they work on. I'm in Nor Cal, in a moderate climate.
Does this make sense? Thanks.