Leak Detection in Greenwich
1000+ five-star reviews
Water moving where you cannot see it does its worst damage quietly. Our leak detection service traces the fault to its exact source first, so the repair stays small. Find out more about Greenwich and how we work on the peninsula.
- $0 Call Out Fee
- Lifetime Labour Warranty
- Licensed & Insured
- Lic #275278C
- Licensed & Insured
- $0 Call Out Fee
- Lifetime Labour Warranty
- On-Site Fast, 24/7
- 1000+ five-star reviews
- Real Humans Answer, Day or Night
- Lic #275278C
- Licensed & Insured
- $0 Call Out Fee
- Lifetime Labour Warranty
- On-Site Fast, 24/7
- 1000+ five-star reviews
- Real Humans Answer, Day or Night
- Lic #275278CNSW plumbing licence, fully insured, water and gas
- $0 Call Out FeeIt costs nothing to get us to your door
- Lifetime Labour WarrantyIf it's not right, we come back. No questions. No cost.
- 1000+ five-star reviewsSydney homeowners have rated us five stars over a thousand times
The fault you hear at night but cannot find
A meter spinning while the house sleeps, a warm stripe across a bathroom floor, plaster that blooms brown one wet week and dries the next. We trace it properly with acoustic and thermal equipment, then quote the repair before anything opens up.
Our leak detection covers supply lines, concealed pipework and under-slab faults across every era of housing here, from Federation bungalows on the point to the strata blocks along the St Leonards edge.
What makes leaks different on this peninsula
- Corroded steel is the biggest culprit Some of the oldest housing in the Lane Cove municipality sits here, and a good share of it still runs original galvanised water services. Pinholes open along the run, often beneath slab or along garden paths, and the first sign is a bill or a damp patch rather than a visible drip.
- Renovations hide their own risks Joints and mixers tucked behind tiling from decades of piecemeal updates can weep for months inside a cavity, which is why tracing comes before demolition on every job we take.
Our core leak detection services
Acoustic leak tracing: Ground microphones and listening rods amplify the sound water makes escaping a pressurised line, and this acoustic method pinpoints a buried or concealed leak to within a hand's width, which means the repair opens a small hole rather than a trench.
Thermal imaging surveys: An infrared camera reads temperature differences across walls and floors, so a hot water line leaking under a slab or inside a wall cavity shows itself as a warm signature long before moisture reaches the surface and damages finishes.
Pressure testing the supply: We isolate sections of pipework and test each under pressure, which proves whether the loss is in the hot side, the cold side or the garden service, and removes the guesswork that turns simple repairs into exploratory demolition.
Under-slab and garden mains: Escapes beneath concrete or along long garden runs are traced with correlation equipment before excavation starts, and because the peninsula's blocks fall steeply toward Gore Creek, gravity-fed garden services often leak at joints halfway down the slope.
Moisture mapping and reports: Moisture meters map the full extent of damp around a confirmed fault, which matters for insurance claims and for planning the drying out, and the findings are written up clearly so you can show them to your insurer directly.
Acoustic leak tracing
Ground microphones and listening rods amplify the sound water makes escaping a pressurised line, and this acoustic method pinpoints a buried or concealed leak to within a hand's width, which means the repair opens a small hole rather than a trench.
Thermal imaging surveys
An infrared camera reads temperature differences across walls and floors, so a hot water line leaking under a slab or inside a wall cavity shows itself as a warm signature long before moisture reaches the surface and damages finishes.
Pressure testing the supply
We isolate sections of pipework and test each under pressure, which proves whether the loss is in the hot side, the cold side or the garden service, and removes the guesswork that turns simple repairs into exploratory demolition.
Under-slab and garden mains
Escapes beneath concrete or along long garden runs are traced with correlation equipment before excavation starts, and because the peninsula's blocks fall steeply toward Gore Creek, gravity-fed garden services often leak at joints halfway down the slope.
Moisture mapping and reports
Moisture meters map the full extent of damp around a confirmed fault, which matters for insurance claims and for planning the drying out, and the findings are written up clearly so you can show them to your insurer directly.
Where leaks hide on this side of the harbour
- Tight side passages, untouched cavities Interwar homes here tuck their hot water systems into narrow passages, and the pipe runs serving them thread through wall cavities that have never been opened since, so a joint failure can soak framing long before anyone sees a stain.
- Roots hunting moisture Century-old street trees and the garden figs planted along George Street and around the school grounds on Kingslangley Road push roots toward any damp, which is why a garden service leak near a mature trunk needs tracing before roots turn a pinhole into a split line.
- Different streets, different ages The hospital, the ferry commuters and the village shops all sit on services of very different ages, so the same symptom can mean very different faults depending on which side of the ridge you live.
Common leak problems we diagnose
The bill that climbs for no reason
A water bill rising without a change in habits usually means a concealed escape on the supply side, and because a dripping tap wastes litres while a buried leak wastes hundreds, we test the meter and the lines before anyone touches a wall.
Damp that returns after repainting
Plaster that stains, dries and stains again points to an active leak feeding it rather than a one-off splash, and our acoustic tracing finds the source so the repair addresses the pipe instead of repainting over the symptom.
The sound of water with everything off
Hearing flow through a pipe at midnight when no fixture is running means water is escaping somewhere on the supply, and on this peninsula that is most often a corroded galvanised run or a failed joint inside a wall cavity.
Why finding it early matters
Damage compounds while you sleep
Water escaping inside a wall or slab soaks framing, plaster and flooring continuously, so a leak found in its first week costs a fraction of one found after a wet season.
Bills tell the truth quietly
A concealed escape shows up on the Sydney Water account before it shows on the wall, and acting on that number saves the water, the damage and the repair all at once.
Small repairs beat big ones
A leak traced acoustically gets a targeted fix through the smallest opening possible, while a leak guessed at tends to end with exploratory demolition and a much bigger invoice.
How it works
The leak detection process, step by step
- 01
Call and tell us
Ring (02) 9072 0504 and describe what's happening, and a licensed plumber, not an answering machine, will tell you what it likely means, what to stop using, and when we can realistically be there.
- 02
Quote before work
Your plumber inspects the job properly, runs whatever diagnosis it genuinely needs, and hands you a single fixed written price covering the complete fix, with a $0 call out fee and nothing added afterwards.
- 03
Trace the escape to its source
We isolate the supply and pressure test each run, then sweep the suspect area with acoustic listening gear and thermal imaging until the exact fault is confirmed, mapping moisture around it so you see the full picture before any opening up is agreed.
- 04
Backed for life
Everything we complete is covered by our Lifetime Labour Warranty, the promise that outlasts the job itself: if it's not right, we come back. No questions. No cost.
Why choose Your Plumber Greenwich
Fixed prices, kept
Every job is priced upfront in plain writing before any work starts, the invoice always matches that number, and weekend or late-evening timing changes nothing, because overtime rates simply don't exist here.
Licensed and insured
Your Plumber Greenwich works under licence #275278C with full insurance behind every job, and the compliance certificates that protect your home's paperwork trail arrive with the invoice, without you ever needing to ask for them.
Lifetime Labour Warranty
Workmanship here is guaranteed for life under our Lifetime Labour Warranty rather than for a warranty card's fine-print window, which says more about how the work is done in the first place than any advertisement could.
Genuinely local response
We work these streets constantly rather than commuting in from across Sydney, so the van reaching you has usually just left a job nearby, stocked for the faults the local houses actually develop.
Where we work
Areas we service
Every household from the tip of the point out to the Wollstonecraft border gets the same tracing service, and we work regularly through Northwood, St Leonards, Longueville and Waverton, so wherever you are around the peninsula the van arrives stocked for the faults these harbour-side streets actually develop.
Good questions, straight answers
Leak detection questions from Greenwich locals
How do you find a leak behind a wall?
We pressurise the suspect line, then sweep the area with listening gear and infrared cameras to narrow the position before any opening up happens, which keeps the repair small and the mess contained.
Can you detect leaks under concrete slabs?
Yes, slab leaks are traced with acoustic correlation and moisture mapping, and the fault is usually accessed through the smallest practical excavation rather than a full slab removal, keeping disruption to one room.
What are the warning signs of a hidden leak?
Watch for an unexplained rise in the water bill, the sound of running water when every tap is off, warm patches on floors, damp or bulging plaster, and mould in places that never get wet directly.
How much does leak detection cost?
We charge a fixed written price before any work begins and the call out fee is $0, so you know the complete cost of tracing and repairing the leak before you approve anything.
Will my water bill drop after a leak is fixed?
A concealed leak can waste thousands of litres silently, so once the fault is repaired and the line retested, most households see the bill return to normal at the next reading from Sydney Water.
Do you check for leaks during a home renovation?
Yes, we pressure test supply lines before walls and floors close up during renovations, because finding a fault at that stage costs a fraction of what it costs once the tiling is finished.
Hidden leak in Greenwich? Call now
A suspected leak should not wait for the damp patch to spread. Call (02) 9072 0504 now and speak straight to a licensed plumber, day or night. The call out fee is $0, the price goes on paper before a tool comes off the van, and every repair is backed by our Lifetime Labour Warranty.
The full range of work we do around the peninsula is listed at home.