I live in northeastern Ohio and so we have some pretty cold and snowy winters. My basement is finished and dry walled. The basement has been water proofed in the past and moisture no longer enters the house. However, the basement is freezing! Does anybody know if I can insulate behind the drywall without putting in a moister barrier? As I don't want to rip all the drywall down and create a mess, I wanted to know if I would be okay drilling holes and spraying in cellulose insulation. Any other suggestions are encouraged. Thanks.