I recently installed R-13 on my unheated basement ceiling to warm the upstairs floor a little and give us a little soundproofing from the basement equipment. I installed the paper vapor barrier downward facing the cold basement. Unfortunately, some of this work was started by the previous owner and I just followed along. I now know I should have put the barrier up towards the heated living room. Can I put cuts in the paper to allow venting or should I switch them around (Lot of work)? Thanks,