I have recently begun work on my basement home theater, and just completed the wood framing. I wish to insulate the lower half (the upper half is already done with "polytarp 6" or something -- came with the new house in January). Now here's the problem. The framing is already in place, but there is no protective barrier between the framing and the concrete. I know it's a bad idea to just stick insulation batts in there without protecting for moisture. The frame sits between .5 to 1 inch from the concrete, so there would be room to pull material around and behind studs... Can anyone recommend a course of action, preferably one that doesn't require tearing down framing?