Humming changed to screeching pipes late at night

9 Dec 2008
Reaction score
United Kingdom
We have had a humming noise coming from our bathroom late at night and the only way we could get it to stop was to flush the toilet and for some reason the toilet would flush all night.

We called out a plumber and he replaced the nylon washers with rubber ones and fixed the water level in the toilet cistern but the noise has changed to a screeching/banging noise, a really loud banging noise. So he came out again and replaced the valves which were worn and eveything seemed to be okay and then I used the sink late at night and the cold tap made the banging noise again.

The noise in the taps seems to be directly related to the temperature outside. It has been really cold this year temperatures dropping to -5.

When our neighbour uses there taps downstairs the banging noise happens as well, they also replaced their bathroom this year and I was wondering if firstly; how do i fix the problem and are they contributing/is there something wrong with their pipes too?

I've read loads of things and think it is the water hammer or loose pipes but I just don't know anymore, we keep getting things checked and replaced and the problem is continuing.
Sponsored Links
gonna be a worn tap in the house which will cause hammer even if its not on. put your hand on all the taps in the house when its happening to feel for a bang my bets its the kitchen sink
Hopefully you have a mains stopcock.

Until the problem is sorted you can turn this off over night.

The banging happens when we use the bathroom sink. If we use the kitchen sink you hear the banging in the bathroom. When the flat downstairs use their bathroom sink it's our bathroom tap that bangs but i notice that most of the noise re the humming is coming from the toilet!

Sponsored Links
toilet could be making the noise cus it has an equalibrium ballvalve which would be affected by the hammer comming from another valve / tap elsewhere. once i had to change all the taps in a house before i traced the faulty one :evil:

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local