Mr. Clog Plumbing
Water Hammer & Noisy Pipes Fixed Sydney
Pipes that bang when a tap shuts off, knock when the washing machine fills, or rattle and hum when the water's running? We find the cause and fix it.
No surprise bills: $0 call-out and a fixed price before any work starts.
Our guarantee: 12 months on our workmanship, in writing. What it covers
About This Service
Water hammer is the bang or thud you hear when water flowing through a pipe is stopped suddenly, by a mixer tap snapped shut or the valve in a washing machine or dishwasher closing. The moving water slams to a stop and the shock travels along the pipe. If the pipe isn't clipped firmly, it jumps against the timber or wall, and that's the knock you hear. High water pressure makes it worse. Over time the repeated shock can loosen clips and joints and wear out valves. We work out what's causing the noise, then fix it: securing loose pipes, dealing with high pressure, fitting a water hammer arrestor where it suits, or replacing the worn part.
What’s Included
- Banging, knocking and rattling pipes diagnosed
- Loose pipes clipped and secured
- Water pressure tested
- Pressure limiting valves installed or replaced
- Water hammer arrestors fitted where suitable
- Worn tap and valve parts replaced
- Fixed price quoted before we start
- 12 months on our workmanship
Fixed price quoted before we start. $0 call-out fee.
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(02) 9139 8945 — available 24/7What the Noise Tells You
A single bang when a tap or appliance shuts off
Classic water hammer. Washing machines and dishwashers are common triggers because their valves close very quickly. So are single-lever mixer taps flicked shut.
Knocking or rattling while water runs
Often a pipe that isn't clipped firmly, vibrating against the frame, or a loose or worn washer or jumper valve inside a tap.
Humming or whistling
Can point to water pressure that is too high, a partly closed valve, or a worn part in a tap, valve or toilet cistern inlet.
Banging after the water has been off
Air trapped in the pipes after the water has been shut off for work can cause spluttering and knocking for a short while. If it doesn't settle, get it checked.
How It's Fixed
Securing loose pipes
Where we can get to the pipes, under the house, in the roof space or in a cupboard, we add or replace clips so the pipe can't move. This often quietens a knock on its own.
Bringing the pressure down
High mains pressure makes water hammer louder and harder on your plumbing. A pressure limiting valve on the incoming water service brings it down to a steadier level.
Water hammer arrestors
A small device fitted near a fast-closing valve, such as the washing machine taps, that absorbs the shock. Useful where the noise comes from one appliance.
Replacing worn parts
If a tap or valve is the source of the rattle or hum, replacing the worn washer, jumper valve or cartridge usually fixes it.
How It Works
Our Process
Listen
When it happens and which tap or appliance sets it off.
Test
Check the water pressure and look for loose or unclipped pipes.
Quote
We explain the cause and give you a fixed price for the fix.
Fix and retest
Secure, regulate or replace, then run the taps again to check.
Related Pages
Common Questions
FAQs
What is water hammer?
The bang you hear when flowing water is stopped suddenly, usually by a tap or an appliance valve closing quickly. The shock travels along the pipe and makes it jump or knock.
Is water hammer harmful?
It can be, over time. Repeated shocks can loosen pipe clips and joints and wear out valves and appliance parts. It's worth fixing rather than living with.
Why do my pipes bang when the washing machine fills?
Washing machine valves open and close very fast, which is a common cause of water hammer. Securing the pipes, a water hammer arrestor at the machine's taps, or bringing high water pressure down usually fixes it.
Can high water pressure cause noisy pipes?
Yes. High pressure makes water hammer louder and can cause humming or whistling. We test the pressure and, if it's high, can fit or replace a pressure limiting valve.
Will you need to open the walls?
Usually not. Most noise is fixed by securing pipes we can reach from under the house or in the roof space, regulating the pressure, or fitting an arrestor at the appliance. If a pipe in a wall is the problem, we explain the options first.
How much does it cost to fix noisy pipes?
It depends on the cause. We give you a fixed price before we start, with a $0 call-out fee.
What Sydney Customers Say
We recently used Mr Clog Plumbing for our granny flat in Guildford and couldn't be happier with the service. Everything was handled professionally from start to finish, with great communication and workmanship…
Absolute legend. Turned up on time, sorted the problem quickly and didn’t charge a fortune. Super easy to deal with and cleaned up after the job too. Will definitely be using him again and would happily recomme…
Turned up on time and honest service, couldn’t ask for much more.
Get a Quote for Water Hammer & Noisy Pipes
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