1920 house. Shower plumbing is in the outside wall. We have torn out the wall previously and installed PEX and insulation. Installed a shut off and drain for the water. There is a radiator pretty close to the shower. Kept fan going to move heat into the room. *we've tried the "water dripping" thing in the past. It led to the first of the burst pipes.

DIDN'T MAKE A DIFFERENCE

Sunday morning. I go to turn the water on. Husband comes downstairs. We are standing there trying to decide what to do for breakfast, and then... you can hear the water hitting the back of the tub. I run down to the basement and shut the water back off. Water is pouring into the basement. Breakfast was as relaxed as it could be. Then we got to pulling the tub away from the wall. Copper pipe, even with the insulation in the wall, split.

So in June we are taking the tub out, and installing a shower. And we are flipping it around so that the freaking plumbing is not in an outside wall.