Leak Detection
Central Coast
Electronic & thermal leak detection — find hidden leaks without damage
Expert Leak Detection
Not all leaks are obvious. A slow hidden leak inside a wall, under a slab or underground can waste thousands of litres of water, drive up bills, and cause structural damage long before you see a drop. Our Central Coast leak detection specialists use electronic acoustic detectors, thermal imaging and pressure testing to pinpoint the exact source of a leak — often without lifting a tile or cutting a wall. Once located, we repair the leak with minimal disruption and provide a full report for your records or insurer.
Why It's Different Here
Hidden leaks are especially common on the Central Coast due to the combination of ageing pipework, hard water and coastal conditions. Older homes in Gosford, Woy Woy and Wyong with original galvanised or copper pipes develop pinhole leaks from internal corrosion, while salt air in beachside suburbs like Terrigal and Avoca corrodes fittings behind walls. Slab leaks affect homes built on concrete slabs across Erina and Tuggerah, where shifting clay soils crack underground pipework. The region's hard water also accelerates fitting wear. Our local teams know where leaks typically hide in each suburb's housing stock and arrive with the right detection gear.
Signs You Need Leak Detection
Spot these early warning signs? Don't wait — catching problems early saves money and prevents bigger damage.
Unexplained High Water Bill
A sudden jump in usage with no change in habits is the most common sign of a hidden leak — often underground or inside a wall.
Damp, Mould or Musty Smells
Persistent damp patches, mould growth or a musty odour often point to a slow leak behind a wall, under a floor or in a ceiling cavity.
Sound of Running Water with Taps Off
Hearing water running or a hissing sound when nothing is turned on suggests a hidden leak in the pipework that needs tracing.
Warm or Hot Spots on Floors
A warm patch on a tiled or concrete floor can indicate a hot water pipe leak under the slab — common in slab-on-ground homes.
Reduced Water Pressure
A gradual drop in pressure across the home can signal a developing leak or pinhole in a supply line losing water before it reaches your taps.
Issues We Fix Every Day
Slab Leaks
Leaks in pipework buried under concrete slabs in Erina, Tuggerah and Bateau Bay homes cause warm floors, dampness and high bills — we trace and repair with minimal slab disruption.
Concealed Wall & Ceiling Leaks
Pinhole leaks in copper pipework behind walls or above ceilings cause damp patches and mould. We use thermal imaging to locate them without cutting walls blindly.
Underground Pipe Leaks
Leaks in underground supply lines waste water silently and can undermine foundations. Our acoustic detectors trace the leak point for targeted excavation.
Pool & Spa Plumbing Leaks
Coastal homes with pools and spas in Terrigal and Avoca often develop leaks in return lines and fittings — we locate and repair them efficiently.
Hot Water Pipe Leaks
A leaking hot water pipe under a floor or in a wall wastes energy and water. Thermal imaging pinpoints the hot leak fast for minimal-access repair.
Recurring Damp & Mould
If mould returns despite cleaning, a hidden leak is usually the cause. We find the source so the mould problem is solved for good.
Our Leak Detection Process
Pressure & Flow Testing
We isolate and pressure-test your supply lines to confirm whether a leak exists and narrow down which section of pipework is affected.
Acoustic & Thermal Detection
Using electronic acoustic listening devices and thermal imaging cameras, we trace the exact location of the leak — even through walls, floors and slabs.
Minimal-Access Repair
Once located, we access the leak with the smallest possible opening, repair or replace the damaged pipe, and reinstate supply.
Pressure Re-Test
We re-pressurise the system to confirm the leak is fully resolved and that no other leaks remain in the line.
Make-Good & Report
We make good any access opening, advise on repairs, and provide a detailed leak detection report for your insurer or records.
Prevention Advice
We explain what caused the leak — corrosion, pressure, or soil movement — and recommend measures to prevent recurrence in your home.
Why Locals Choose Us
Advanced Detection Technology
We use acoustic listening devices, thermal imaging and pressure testing to find leaks precisely — no guesswork or unnecessary destruction.
Minimal-Damage Repairs
By pinpointing the exact leak location, we keep access openings as small as possible, protecting your walls, floors and tiles.
Local Knowledge
We know the pipe types, soil conditions and housing eras across the Central Coast, so we know where leaks typically hide in each suburb.
Insurance-Ready Reports
We provide detailed detection reports and photos to support insurance claims for water damage caused by hidden leaks.
Leak Detection Maintenance Tips
Check your water meter last thing at night and first thing in the morning — if it moves with no taps on, you have a leak.
Monitor bills monthly — a sudden unexplained increase is often the first sign of a hidden leak.
Inspect under sinks and around appliances regularly for dampness or corrosion on fittings.
Have older galvanised and copper pipework inspected for pinhole corrosion, especially in coastal suburbs.
Watch for warm spots on floors in slab-on-ground homes — a sign of a hot water pipe leak underneath.
Address any mould or musty smells promptly — they often indicate a hidden leak behind a wall or under a floor.
Leak Detection We Cover
- Slab & under-floor leak detection
- Concealed wall & ceiling leaks
- Underground supply pipe leaks
- Hot water pipe leaks
- Pool & spa plumbing leaks
- Pressure testing & leak reports
Key Service Areas
Leak Detection Pricing
*$0 callout fee during business hours when work is completed. Prices are indicative — we provide a fixed written quote before starting any work.
Trusted Brands
Fully Licensed & Insured
Every Coast Plumber technician holds full NSW plumbing, drainage and gas fitting licences with comprehensive public liability insurance. Workmanship guaranteed on every job.
Leak Detection FAQ
How do you find a leak without digging or cutting walls?
We use electronic acoustic listening devices and thermal imaging cameras to trace the sound and heat signature of a leak through walls, floors and slabs — pinpointing the exact spot before any access is made.
My water bill jumped — do I have a hidden leak?
Possibly. A sudden unexplained increase in usage is one of the most common signs of a hidden leak. We can pressure-test your system to confirm and trace the source.
What is a slab leak?
A slab leak is a leak in pipework buried under a concrete floor slab — common in slab-on-ground homes across Erina and Tuggerah. Warm floor spots or dampness are typical signs.
Can you detect leaks in underground pipes?
Yes. Our acoustic detectors trace leaks in underground supply lines so we can excavate only at the exact leak point, minimising disruption to your yard.
Do you provide a report for insurance?
Yes. We provide a detailed leak detection report with photos and findings to support water-damage insurance claims.
Why are hidden leaks common on the Central Coast?
Ageing galvanised and copper pipework, hard water causing internal corrosion, salt air attacking fittings, and shifting clay soils all contribute to hidden leaks across the region.
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Need Leak Detection Today?
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