Recently the GF had significany rennovations done to her home. It
involved a new bathroom. The fixtures remained basically in the same
locations, but the plumbing had to be adjusted very slightly. New
taps, nozzles, etc. There were no signifant changes made that I
The issue is when she turns off the COLD water quickly there is a
thump-thump behind the shower wall, but it does not repeat itself. It
is difficult to tell, but it seems to come from above the faucet
assembly. The water feeds from below.
The same happens if the sink in this bath and the adjoining bath or
the toilet flow stops suddenly - it seems to be the cold water in all
I do not think it happens with hot water, nor does it happen if the
water is turned off more gradually.
Is there a possibility it could be the shower valve assembly, or a
loose pipe? I am hoping there is some way to try to repair it without
going through walls.
Any imput/observations/approaches to try/or further diagnostic methods
to narrow it down more would be greatly appreciated!!!!