In most cases, knocking pipes are caused by variable water pressure in the main supply pipes coming into your home. ... However, when the air used in pressurizing those pipes leaks or is depleted, water moves suddenly and violently, creating the knocking sound as it traverses the length of the supply lines.
How do you stop water pipes from clunking?
3. Water Hammer
- Turn off your mains water supply.
- Turn on the taps on the top story of your home.
- Turn on the taps on the bottom story of your home.
- Allow all water to drain from your system.
- Once water has drained (no more water comes out of your taps) turn the water supply back on.
Should I worry about banging pipes?
When the copper expands as hot water passes through it, it can bang into joints, brackets, other supports and even the walls of your home. Expanding copper and the noise that come with it is nothing to worry about – it is a well-known property of the metal.
