For the past few months, I get water hammer when I turn the kitchen cold tap off suddenly. I've never had that in the previous ten years. The solution is to turn the tap on again and then off more slowly.
The only thing that is different with my plumbing since all this started is that I had new bathroom plumbing installed upstairs (bath, sink and lavatory). As far as I remember, the installers never needed to turn off the mains water supply as they isolated the circuits using the cold and hot tank valves.
So what could they have done which brought about this new water hammer problem?
The only thing that is different with my plumbing since all this started is that I had new bathroom plumbing installed upstairs (bath, sink and lavatory). As far as I remember, the installers never needed to turn off the mains water supply as they isolated the circuits using the cold and hot tank valves.
So what could they have done which brought about this new water hammer problem?