Hello, hopefully someone can help me. Everytime my wife and I turn on the hot water from the master bath sink, master shower and kitchen sink I hear a banging noise in the pipes(Not Water Hammer). All three faucets are connected to the same hot water line. I have another full bathroom that is connected to a seperate hot water line and doesn't make noise. I checked the hot water copper pipe and it was a little loose against the floor joist. There is copper u brackets nailed to the joists. When I had a plumber come over he said the hot water pipe was too tight against the floor joists and loosened the pipe by pulling on it. Now the pipe is away from the floor joists and it still makes noise. Even louder then before. I thought the pipes needed to be secured tight to the floor joists. We have a well and installed a new back wash system with a new water tank this past summer. I am not sure if that is the problem. Any help would be appreciated. Thanks.