Water Hammer & Noisy Pipes in Sydney
Water hammer and noisy pipes in Sydney: the washing machine finishes filling and something in the wall goes thump. Or the pipes rattle every time a tap runs, or the toilet hums while it refills.
Tell us what's happening
The short answer
Water hammer is usually a valve closing suddenly at high pressure. A water hammer arrestor or a pressure limiting valve, plus clipping loose pipes, usually stops it.
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- Turn the water off at the stop tap beside the meter.
- Stop flushing, showering and running the washing machine if sewage is coming up.
- Keep children and pets away from any sewage overflow.
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What happens when you get in touch
Step 1: Call or book online
Tell us what is happening. We ask the right questions and book a time that suits you.
Step 2: We find the cause
A licensed plumber diagnoses it properly, with a drain camera, leak detection or a pressure test where it helps.
Step 3: A fixed price, agreed first
You agree the price before any work starts. We quote the job, not the hour, so there are no surprise charges.
Step 4: Done right, guaranteed
We finish the job, clean up, and back our workmanship with a lifetime labour guarantee.
Step 5: You know the price first
The figure for the whole job, in writing, before anyone starts. That figure is what turns up on the invoice.
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Questions and answers
A valve closing suddenly, most often a washing machine, dishwasher or flick mixer, while water is moving fast. High pressure and loose pipes make it worse.
Not in one bang, but repeated shocks loosen clips, fatigue joints and wear out fittings, and over time that can end in a leak or a burst.
Its inlet valves open and shut instantly, several times a cycle. A water hammer arrestor at the machine's taps usually quietens it, and if the pressure is high, a pressure limiting valve helps too.
The copper expands as it heats and rubs against framing or clips. Cushioning or sleeving the pipe where it touches the frame stops the noise.
The inlet valve is worn or vibrating in the flow, sometimes helped along by high pressure. A new inlet valve usually stops it.
Usually. Most clipping and cushioning is done from the subfloor or roof space, and arrestors and valves are fitted where they are accessible.
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