Non-invasive leak detection. Found, proven, fixed.Watford, Hertfordshire and London · 07516 755 680
Same-day and next-day surveys usually available

We find the leak. With the least disruption to your home.

Hidden water and heating leaks pinpointed with thermal imaging, tracer gas and acoustic listening, then repaired, with a photographic report your insurer can act on. Based in Watford, working across Hertfordshire and London.

Non-invasive firstFixed price before we startInsurance-ready reportsFind it and fix it
Water spraying from a burst underground pipe found and exposed by Greenwinter Leak Detection

Book a leak survey

Opens WhatsApp with your details written out. Add a photo of the damp patch or your boiler gauge in the chat. Nothing is stored on this site.

Non-invasive firstThermal imaging, acoustic and tracer gas do the searching. Nothing is opened until the leak is marked.
Fixed price agreed before we startYou know the cost of the survey before we arrive, and we tell you honestly if a leak cannot be located non-invasively.
Report with photographic evidenceReadings, thermal images and photographs written up for your buildings insurer's trace and access claim.
Find it and fix itThe engineer who located the leak can open that one spot, repair the pipe and test the system on the same visit.
Is it a leak?

Signs there is a hidden leak in your home

One of these on its own is worth a phone call. Two or more and you almost certainly have water going somewhere it should not. Each one opens a guide to what it means and what to do now.

Talk it through
What we find

Leak detection for every kind of leak

Water mains under the drive, heating pipes under a screed, a bath waste inside a ceiling, a manifold loop that will not hold pressure. Pick the one that sounds like yours.

All services
How it works

From your first call to a leak you can see in the report

Tell us what you are seeing

Call or WhatsApp with a few photos and a line about the symptoms. We ask a handful of questions, agree a fixed price and book the survey, usually for the same or the next day.

Work out which system is leaking

On arrival we pressure test the mains, hot water and heating, check the meter and test the escaping water, so we know what we are looking for before the detection starts.

Pinpoint the leak without opening up

Thermal imaging, the acoustic ground microphone and tracer gas are used as the pipework dictates until the leak is marked on the floor or wall.

Report, and repair if you want it

You get a written report with readings, thermal images and photographs, ready for a trace and access claim. If you want the leak fixed, we open that one spot and repair it.

Insurance claims

A report your insurer can act on

Most buildings insurance policies include trace and access cover for finding a hidden leak and making good the way in. Our report is written for that claim: what we tested, what we found, where it is, with photographs, thermal images and readings.

  • Turn off the stop tap or the heating and stop topping up
  • Photograph the damage, the boiler gauge and the meter
  • Tell your insurer a leak is suspected and detection is being arranged
  • Trace and access pays to find the leak and make good the access
Copper supply pipe and stopcock exposed in a neat excavation through a concrete floor
Where we work

Leak detection across Watford, Hertfordshire and London

Based in Watford, working daily across Hertfordshire and every London borough, and travelling further for jobs that need us. Each area page shows the leaks we have found there.

All areas
Straight answers

Questions we are asked most

How much does leak detection cost in Watford?

We agree a fixed price for the survey before we come out, after a short call about the property and the symptoms. No hourly rate and no surprises. Many buildings insurance policies cover the cost under trace and access, and our report is written for that claim.

Do you cover London as well as Watford?

Yes. We are based in Watford and work across Hertfordshire and London, from Harrow, Barnet and Enfield through north and west London to south of the river, and further afield where the job needs us.

Will leak detection damage my home?

No. Thermal imaging, the acoustic ground microphone and tracer gas all work through finished floors and walls. The only opening made is at the marked leak, and only if you ask us to carry out the repair.

Is leak detection covered by my insurance?

Many buildings insurance policies include trace and access cover, which pays for finding a hidden leak and making good the area opened to reach it. Check your policy wording, and let your insurer know a leak is suspected. Our report gives them everything they need.

How long does a leak detection survey take?

Most home surveys take between two and four hours. Large properties, buried supply pipes and underfloor heating can take longer, and we tell you before we start if that looks likely.

Do you repair the leak as well as find it?

Yes. Once the leak is pinpointed we can open that one area, repair the pipe, refill and test the system, and photograph the repair for your report. If you would rather use your own plumber, the marked location and the report give them everything they need.

Act now

Still dripping? Every hour costs you water and damage.

Call now and we will tell you straight away whether it needs a same-day visit. Or send a photo of the stain, the meter or the boiler gauge on WhatsApp.

07516 755 680

Book a leak survey

Opens WhatsApp with your details written out. Add a photo of the damp patch or your boiler gauge in the chat. Nothing is stored on this site.

Book a survey