First post here so any help would be appreciated. I just got done plumbing my shower. One of my shower heads is a 8 inch moen rain head and it is coming down straight from the ceiling. My question is, the pipe goes up an interior wall into the attic about 2 inches. It then runs parallel to the bathroom ceiling about 18 inches and then back down about 5 inches where it is connected to the shower head. I would like to know if that 18 inch pipe that is in the attic will freeze or will the water all drip out since it runs parallel to the ceiling when the water is off. What would be the best thing to do. The pipe is in between the drywall and insulation in the attic already. Should I get one of those foam rolls that have a slit in it and put it around the pipe or should I move the pipe back into the actual room and convert it to chrome since it would be visible