I have constant problems with moisture in my crawl space because the water table where I live is very high. About 3/4 of the year there is not much of a problem, but in the spring I get a lot of water seeping up into the crawl space. I have a sump pump that keeps the water in check, but I still end up with some mildew on some of the joists in the crawl space. I usually clean the mildew with a bleach/water solution that someone told me about. I was wondering if I should use a water sealer (something like thompsons waterseal) on the joists in the crawl space to prevent future mildew damage (and a lot of scrubbing)?
Also, I was plannig on putting down a vapor barrier to keep the moisture down, but thought that it could cause more problems with getting the ground back to dry in the non-wet times of the year. Would a vapor barrier be a good idea?