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Your water pipes may whistle and sing after you flush the toilet, or they may bump and grind. Either way, something's wrong -- they shouldn't make any noise at all. When the pipes make loud banging sounds, the fault is in the pipes, but whistling sounds usually come from the toilet fill valve.


Once your pipes are empty of all water, open your home’s main water valve and turn back on your faucets. To see if this has worked, flush the toilet and listen for the banging noise after the toilet stops working. If the pipes still make the noise, try installing a new slow shut off toilet valve.


There are a number of reasons why a toilet may make noise after flushing; however, a loud noise that takes more than a minute after flushing the toilet may indicate a restricted water flow or a problem with water pressure. In such a case, the pressure valve should be adjusted while the toilet is making the noise.


That's what's happening in your pipes. When your toilet flushes, it opens a valve to get more water and then suddenly shuts the valve off. The water that was rushing to your toilet is now cut off and the pressure causes your pipes to make a loud banging noise. How serious is the banging noise?


Open the toilet tank and flush the toilet. When the valve starts making the foghorn noise, lift the float ball all the way to the top of the tank. If the noise stops, there's a loose or worn ...


Water Hammer or Resonance causes loud noise in the pipes after the toilet has filled up. Fluidmaster shows you how to fix this problem. Water Hammer or Resonance causes loud noise in the pipes after the toilet has filled up. Fluidmaster shows you how to fix this problem. ... flush toilets to check for water hammer.


One of the most common causes of humming pipes after flushing a toilet is debris trapped in an inlet valve. Water carries small stones, calcium deposits and solder to the valve area which traps them, resulting in the annoying noise. Before replacing the valve, owners might follow the manufacturer's directions to flush any debris from it.


Do you hear a loud vibrating noise for about 30 seconds after your flush your toilet? Does the sound reverberate through your plumbing like the noise is coming from the pipes in your walls or floor? It may even be more of a humming noise like a fog horn. The culprit of the vibration is likely your toilet fill valve.


Pipes in your bathroom wall are making a knocking sound every time the toilet is flushed. Knocking noise happens in the laundry room when clothes washer finishes filling. There’s a loud banging noise in the water pipes when the sprinkler system turns off. Most likely cause. Water hammer. While many people incorrectly use the term water hammer ...