I have a banging noise in the pipes in the shower when I turn on any cold water fixture in the bathroom. The noise stops when another cold water faucest is turned on. I am sure it is a loose pipe in the shower but I do not want to tear down the wall to fix it if possible. I checked the pewasure and it is 62 psi so it is not a failed water regulator.

Turn down the pressure to 50 psi. See if it continues... Come back to us