I have a question I live in NJ where it gets pretty cold in the winter. I just got a 2nd floor addition with an overhang\candlever that I put my shower plumbing and toilet plumbing over. Im woried that it will freeze. I had planned to seal it very well (Air tight) from the bottom and insulate it very well along with pipe insulation. I get the feeling that that will not help me. With that said I thought about heat tape but thats against code so thats out. I also saw many people say to let it drip however id rather not have to leave the water on. I also so the propbes that you can insert in to the piper as well but not sure thats the best method either. I had one final thought and that was to take a 2 inch PVC pipe and run it off my furnace to the 2foot wide by 3 foot space in the floor and drill holes in the pipe so the heat blows out and kep the pipes warm. Again not sure if that will work well if its sealed. Im open to anything at this point and hope someone has a good idea that will not violate codes. HELP winter is weeks away!!!