In my shower upstairs, a noise can be heard behind tha wall at the
pipes which is very disturbing and loud. This only occurs when the
shower head is used and when water pressure is increased. It also
seems to get worse when I turn the valve to get the water hotter. Any
experience with this and how can it be corrected?
Any chance you've got a low flow shower head attached? I
installed such an animal last year and it uses a method of
intraining (sp?) air into the discharge at the swivel. It
creates one heck of a lot of noise which comes from the
vertical feed pipe. I think this noise is due to the air
intraining valve pulsating very rapidly. In my case, it was
a new shower install and I was able to put insulation in
around the piping before closing up the wall. If I remove
this particular water saver head and swivel, and install a
standard head, the noise is gone.
Do you have copper pipes? Could be metal pipes expanding as hot water
runs through them. If a clip that holds the pipe is on with just the
right amount of tightness, the hot water exapnds (lengthens) the pipe,
causing it to rub against the clip, and then you hear a little tap or
click sound. It will do it a number of times until the pipe has
reached equilibrium temp and then the noise stops. Then when you are
done with the shower it may do it again as the pipe cools.
The solution is to loosen the clip so that the pipe can expand freely.
Unfortunately, you need access to the pipe, so if it is buried behind a
wall, either start tearing into to the wall, or else learn to live with
the noise. The noise only hurts your eardrums, won't hurt the house at
Could you be describing "hammering" that occurs to plumbing. (never happened
to me thoug).
Usually there are 2 pipes that extend about 12" or so above the faucet. The
air within the pipes is supposed to act as a shock absorber for water
pressure when using the faucet, preventing the hammering sound. Over time,
water slowly fills this air space. Once the air space is gone you get
The remedy for this is to empty your pipes to return the air space in the
shock absorbers. To do this, turn of the main water feed to the house, open
all faucets, not forgetting the one in the basement (the lowest point in the
system). All the water should drain out of the system.
turn on the main and turn off all the faucets afterwards.
If this works, let me know. I'm kinda curious. A plumber friend took care
of my plumbing install in the upstairs bathroom. He did not install that
shock absorber thing...said it was B.S. and plumbing doesn't knock. He
promised to come in and install one if it ever knocks...
I already did this and it still makes the noise. It's funny how it
only does it when the dial is turned left to add hot water and when the
shower head is used! Any more suggestions before I call a plumber?
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