London leak detection specialists

Specialist Hidden Leak Detection in London

Suspect a hidden leak? Tell us what's happening — we handle leak detection enquiries for homeowners, landlords, and property managers across London, quickly and without the guesswork.

Non-invasive methods
Residential & commercial
Insurance report support

Non-invasive first

We locate the leak before anything gets opened up — minimising disruption to your property.

Same-day attendance available

For urgent cases, we can often have a specialist at your property the same day.

Insurance-ready reports

Detailed, photographic trace & access reports designed to support home insurance claims.

Quote request

Tell us what you're dealing with.

Fill in what you're seeing and submit. We'll review the details and follow up via WhatsApp to move things forward.

1

Start with the essentials, then describe what you are seeing.

2

We use the details to judge urgency, property context, and likely fault area.

3

We follow up via WhatsApp and, where relevant, connect you with a suitable specialist.

60-second intakeLondon-first coverage

Send us the details

Describe what you're seeing. Once you submit, your details open in WhatsApp — we'll review and follow up quickly.

Is water actively escaping right now?

Prefer to message us directly? WhatsApp us.

What kinds of leaks do we help with?

Whether it's a drip, a damp patch, rising damp, or something less obvious — we help identify what's happening and what to do next.

Underfloor Leaks

Leaks beneath solid floors, tiles, or timber boards — located using acoustic and thermal methods, so nothing gets lifted unnecessarily.

Leaks Behind Walls

Hidden pipe failures behind walls, tiling, or plasterboard — mapped through moisture scanning before any opening-up work begins.

Ceiling Leak Sourcing

Water appearing through a ceiling from a flat above or a roof space — traced back to the actual source, not just the nearest damp patch.

Heating System Loss

Unexplained drops in central heating or underfloor heating pressure — diagnosed using pressure tests and tracer gas to locate where it's escaping.

From first message to found leak

You don't need to know what's wrong. Just describe what you're seeing — we'll handle everything else.

Step 1~2 minutes

Tell us what you're seeing

Fill out our form or message us directly on WhatsApp. No technical knowledge needed — just describe the damp patch, stain, or pressure drop.

Step 2Same day available

We schedule your specialist

We review your details and arrange a specialist for your property. For urgent cases, we can often have someone out to you the same day.

London-wide · 7 days a week

Step 31–3 hrs on site

We find the leak — or rule one out

Your specialist attends with thermal imaging, acoustic profiling, and tracer gas detection. You get a clear answer and an insurance-ready report if needed.

Non-invasive · No unnecessary damage

Ready to find out what you're dealing with?

No fix obligation · Usually same-day · Insurance reports available on request

How leaks are found

Thermal Imaging

Detecting temperature differentials caused by hidden moisture behind structures.

Acoustic Profiling

Highly sensitive microphones that listen for the sound of water escaping from pipes — often effective through concrete and masonry.

Moisture Mapping

Electronic deep-wall probing to track the spread of dampness to its origin point.

Tracer Gas & Pressure

A safe, harmless gas is introduced into the pipe. It escapes at the leak point and is detected at the surface to pinpoint the exact location.

Who we work with

We handle enquiries from a wide range of property owners and managers across London.

  • Homeowners & Flat Owners
  • Landlords & HMO Managers
  • Property Management Firms
  • Small Commercial Premises

Service Coverage

Leak Detection Across London Boroughs

These are some of the boroughs we cover. We accept enquiries from across Greater London.

About FlowTrace

Specialist leak detection. Not a call centre.

  • 20+ years of combined experience across our specialist network — detection-focused, not general plumbing.
  • Hand-picked specialists matched to your job — not the nearest available person on a directory.
Learn more about us
0+

Years combined experience

Diagnosis Before Repair

We locate the source before anything gets opened up — minimising disruption and avoiding unnecessary work.

Non-Invasive First

The aim is always to find the leak without damaging the property. In most cases it can be pinpointed before any access work starts.

Insurance Ready

Detailed, photographic trace and access reports designed to support your "Trace & Access" insurance claim smoothly.

Specialist Focus

Leak detection is a specialist field. We focus on connecting you with the right people to diagnose and move your issue forward properly.

Frequently Asked Questions

Trace and access is the process of locating a hidden water leak (the trace) and working out the least disruptive way to expose it for repair (the access). It uses specialist equipment rather than opening up walls or floors at random — which saves time, cost, and unnecessary damage.

Stop the damage. Find the source today.

Send a few details about your issue and we'll review and follow up quickly via WhatsApp. No obligation — just a fast, clear next step.