Ferdinand Posted August 14, 2021 Share Posted August 14, 2021 I have a strange noise somewhere in (I think) my shower pipework. When I turn the hot tap off abruptly at the wash basin there is a "ker-lunk" from somewhere in the shower pipework (I think). Can anyone give any thoughts about what I need to look for? For example is it likely to be a pipe loose in its mounting? The bathroom was completely redone a few years ago. It sounds like a variety of waterhammer to me, of which I am familiar as pipe vibrations at previous houses. Thanks Ferdinand Link to comment Share on other sites More sharing options...
Marvin Posted August 14, 2021 Share Posted August 14, 2021 1 hour ago, Ferdinand said: I have a strange noise somewhere in (I think) my shower pipework. When I turn the hot tap off abruptly at the wash basin there is a "ker-lunk" from somewhere in the shower pipework (I think). Can anyone give any thoughts about what I need to look for? For example is it likely to be a pipe loose in its mounting? The bathroom was completely redone a few years ago. It sounds like a variety of waterhammer to me, of which I am familiar as pipe vibrations at previous houses. Thanks Ferdinand Loose pipe 1 Link to comment Share on other sites More sharing options...
Temp Posted August 14, 2021 Share Posted August 14, 2021 When the water stops suddenly you get a shockwave going back up the pipe. This can make noises several ways, sometimes at sharp bends or one way valves. There are water hammer arrestors available but Ive never needed one.. https://www.screwfix.com/c/heating-plumbing/hammer-arresters/cat10420003 I believe they are just a pipe with air in acting as a spring (and perhaps a piston/seal to stop the air dissolving in the water?) 1 Link to comment Share on other sites More sharing options...
Ferdinand Posted August 14, 2021 Author Share Posted August 14, 2021 3 hours ago, Temp said: When the water stops suddenly you get a shockwave going back up the pipe. This can make noises several ways, sometimes at sharp bends or one way valves. There are water hammer arrestors available but Ive never needed one.. https://www.screwfix.com/c/heating-plumbing/hammer-arresters/cat10420003 I believe they are just a pipe with air in acting as a spring (and perhaps a piston/seal to stop the air dissolving in the water?) It's been fine for about 4 years, so I am hoping I can trace tthe bit that has suddenly come loose. Link to comment Share on other sites More sharing options...
tonyshouse Posted August 14, 2021 Share Posted August 14, 2021 Water hammer, it can be caused by the tap washer “bouncing” does it happen only happen when the one tap is turned off. Link to comment Share on other sites More sharing options...
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