Can anyone please help with a noisy water pipes problem?
It's developed over the past few months and what happens is this....
Shortly after drawing hot or cold water from the downstairs or upstairs taps, a loud "moaning" noise can be heard from the supply pipes to the cold water tank in the loft. There is also some vibration on the pipes. The racket goes on for about five minutes.
Turning on a tap (upstairs or downstairs) and letting it run for a few seconds stops the noise temporarily, but it returns a minute or two later and, again, takes about 5 minutes to subside.
I seem to recall reading stuff about "water hammer" and wonder if this is what I've now got! If so, what's the cure? If not, has anyone got better ideas on the source of the problem?
Thanks in advance....