mc510
Member
Previous owner of my house added a second bathroom, with permits. They did not, apparently, re-do the original plumbing (which looks to be 5/8 copper) but just tapped-in with ½ inch copper to go to the new bath. I'm guessing that this is the reason that the shower temp (either one) goes off wildly if any other water is turned on. Or is what they did proper? (It's an older home and does not have pressure balanced shower valves, but probably needs them.)