I stupidly framed out my basement and put up drywall, which looks great. I then realized that I should level the floor - it drops 3-4" over 12' and it isn't flat, either. I want to use concrete to level the floor so that I have more flooring options. My drywall ends ~1" off of the floor so that it doesn't wick water and I have a membrane under the the sill piece. Leveling the floor would place the level of the concrete high enough to overlap and contact the bottom 2-3" of drywall. If I have 2-3" of concrete against the drywall, I will need a moisture barrier. What can I place on the bottom of the wall to stop moisture from wicking into the drywall? Or do I rip off the bottom of the wall? Or do I tear down my new wall and level the floor underneath it? The basement has an interior French drain and there is a floor drain in an adjacent room. Plastic over the floor shows moisture due to a high water table, but there has never been water in the sump for the French drain.