How do you find a hidden water leak without digging up floors?

We use specialist non-destructive equipment including acoustic listening devices, thermal imaging cameras and moisture meters. These allow us to pinpoint the source of a hidden leak behind walls, under floors or beneath concrete without unnecessary damage to your property. We only open up the area we need to access once the leak location is confirmed.

What are the signs I might have a hidden leak?

Common signs include unexplained increases in your water bill, damp patches on walls or ceilings, the sound of running water when everything is turned off, or a drop in water pressure that has no obvious cause. Mould or musty smells in a room can also indicate a slow, ongoing leak. If you notice any of these, it's worth calling us for an inspection.

Can a small leak cause serious damage if left?

Yes. Even a slow drip can cause significant structural damage over time, including rot, mould, compromised plasterwork and, in the worst cases, weakened joists or flooring. The sooner a leak is identified and repaired the less damage it causes and the lower the cost of putting things right.

Do you repair the leak as well as detect it?

Yes. We locate the leak, carry out the repair, and then test to confirm the leak has been fully resolved before we leave. You won't need to organise a separate plumber to fix what we find.

Will my insurer accept a leak detection report?

Most insurers will accept a written report from a qualified plumber detailing the location, cause and repair of a leak. We can provide full documentation of the detection and repair work carried out, which can support a claim for any resulting damage. We recommend contacting your insurer before work begins if you plan to claim.

Leak Detection in Walton-on-Thames

Accurate, non-destructive leak detection in Walton-on-Thames — we trace hidden leaks quickly to save you time, water and money.

5.0 · 73 verified reviews

Clear & Upfront Pricing
24/7 Callouts, 365 Days A Year
Trusted Local Business
Gas Safe Registered Installers
£5,000,000 Public Liability Insurance

01932 556300

Walton Plumbers engineer using leak detection equipment in Walton-on-Thames

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Accurate Leak Detection in Walton-on-Thames

Hidden water leaks can cause serious damage long before you spot them — damp patches, peeling paint, a musty smell, unexplained rises in your water bill, or a boiler that keeps losing pressure. Walton Plumbers specialise in tracing leaks quickly and accurately across Walton-on-Thames and the surrounding KT12, KT13, KT8, KT10, TW17, TW16, KT11 and KT7 areas, so the problem can be fixed before it gets worse.

Finding the exact source of a leak takes experience and the right approach. Rather than tearing up floors and walls on guesswork, we use careful, non-invasive methods to locate the leak precisely. That means less mess, less disruption to your home and a repair that's targeted where it's actually needed — which usually keeps costs down too.

Leak detection in Walton-on-Thames is often needed where hidden pipework runs through lofts, under floors or behind fitted kitchens, especially in homes affected by wear from hard Surrey water.

Whether the leak is on a heating pipe, a concealed supply pipe or beneath a bathroom floor, our Gas Safe registered engineers will find it and put it right. We'll keep you informed throughout and make sure everything is watertight before we leave. For leaks that can't wait, we're available 24/7.

Call 01932 556300

Walton Plumbers engineer using a thermal imaging camera for leak detection in Walton-on-Thames

Our Leak Detection Process

Report the signs
Damp patches, rising water bills, low pressure or the sound of running water — tell us what you’ve noticed.
Non-invasive investigation
We trace the leak accurately, minimising disruption and avoiding unnecessary damage to floors and walls.
Pinpoint the source
We confirm exactly where the leak is coming from so the repair can be targeted and cost-effective.
Repair & reassure
We carry out the repair and check the system is watertight, keeping you informed at every stage.

Common leak detection problems we fix in Walton

If you need a plumber in Walton to track down a leak that is not showing itself clearly, we can help. From riverside homes in Walton-on-Thames KT12 to flats near the high street and older semis in nearby KT13 and KT8, we find leaks with care and minimal disruption.

Hidden Floor Leak

A hidden leak under the floor often shows up as a soft patch, a musty smell or slightly warm boards when a heating pipe has split. Our engineer uses targeted testing to locate the source without lifting more floor than necessary, then explains the next repair step clearly.

Water Meter Keeps Running

If the water meter keeps moving when nothing is switched on, it usually points to a leak on the supply side or a faulty fitting somewhere in the pipework. We isolate sections of the system, test pressure and trace the loss so the problem can be found before it causes more damage.

Damp Patches On Walls

Damp patches on walls can come from a slow pipe leak, a cracked joint or water travelling along masonry before it shows indoors. We check nearby pipe runs, walls and concealed fittings, then use specialist equipment to pinpoint where the moisture is entering so the right repair can be made.

Leak Through Ceiling

A leak through the ceiling often means water is escaping from an upstairs bathroom, heating pipe or cold water line and following joists before dripping through below. We work methodically to identify the source, which is especially important in Walton homes where the visible stain is often some distance from the real leak.

Thermal Leak Finding

Thermal imaging helps us spot temperature changes caused by water escaping behind walls, under floors or around heating pipework. We combine it with acoustic leak detection, so we can hear the leak as well as see the pattern it leaves, which improves accuracy on modern and older properties alike.

Mains Pipe Leak

A mains supply pipe leak can waste a lot of water and may cause low pressure, soggy ground or a constantly spinning meter. We trace the underground route, confirm where the loss is happening and advise on the most suitable repair, whether the pipe runs beneath a driveway, garden or shared access area.

Expert Advice

“Leak detection in Walton-on-Thames needs patience, because a small drip can travel under floors or behind plaster before showing itself. I use a methodical approach so we can find the source without tearing into more of the house than necessary.”

AaronPlumbing & Drainage Engineer15 years’ experience

Frequently Asked Questions

: We use specialist non-destructive equipment including acoustic listening devices, thermal imaging cameras and moisture meters. These allow us to pinpoint the source of a hidden leak behind walls, under floors or beneath concrete without unnecessary damage to your property. We only open up the area we need to access once the leak location is confirmed.
: Common signs include unexplained increases in your water bill, damp patches on walls or ceilings, the sound of running water when everything is turned off, or a drop in water pressure that has no obvious cause. Mould or musty smells in a room can also indicate a slow, ongoing leak. If you notice any of these, it's worth calling us for an inspection.
: Yes. Even a slow drip can cause significant structural damage over time, including rot, mould, compromised plasterwork and, in the worst cases, weakened joists or flooring. The sooner a leak is identified and repaired the less damage it causes and the lower the cost of putting things right.
: Yes. We locate the leak, carry out the repair, and then test to confirm the leak has been fully resolved before we leave. You won't need to organise a separate plumber to fix what we find.
: Most insurers will accept a written report from a qualified plumber detailing the location, cause and repair of a leak. We can provide full documentation of the detection and repair work carried out, which can support a claim for any resulting damage. We recommend contacting your insurer before work begins if you plan to claim.