Leak Detection in London
Worried you’ve got a hidden water leak? Our leak detection service helps you pinpoint the source quickly, with minimal disruption. Whether it’s a slow leak behind a wall, an underfloor heating issue, or a sudden pressure drop, we use accurate, non-invasive methods to find the problem and recommend the best fix.
We work across London and surrounding areas, helping homeowners, landlords, letting agents and businesses locate leaks before they cause costly damage to plasterwork, flooring, electrics, and finishes.

Fast, Non-Invasive Leak Detection
Not every leak is obvious. Many start silently and only show up as damp patches, mould, bubbling paint, or higher-than-usual water bills. Our approach focuses on finding the exact location of the leak so you can avoid unnecessary “lift and look” work.
Common Signs of a Hidden Leak
- Unexplained increase in your water bill
- Low water pressure or pressure dropping over time
- Damp patches, staining, or peeling paint
- Mould or musty smells (especially around skirting boards)
- Wet or warm spots on floors (possible underfloor heating leak)
- Sounds of running water when taps are off
- Ceiling stains after using bathrooms above

What We Can Detect
Leaks can come from pipework, fittings, heating systems, drains, and even external supply lines. We’ll assess the symptoms, isolate where possible, and test methodically to confirm the source.
Leak Types We Commonly Find
- Mains water leaks (internal and external)
- Hot and cold water pipe leaks (including behind walls)
- Bathroom and shower leaks (trays, seals, wastes, pipework)
- Radiator and central heating leaks
- Underfloor heating leaks
- Overflow and float valve issues (tanks and cisterns)
- Hidden leaks under floors, in ceilings, and within service voids

Our Leak Detection Process
Every property is different, so we tailor the investigation to your symptoms. Our goal is to locate the leak accurately and explain the next steps clearly.
How the Investigation Works
- Initial assessment: We review symptoms, recent works, and likely causes.
- Isolation checks: We narrow the leak zone by isolating circuits/feeds where possible.
- Targeted testing: We use the most suitable non-invasive methods for your property.
- Findings explained clearly: We confirm the likely source and what repair is required.
- Next steps: If you’d like us to carry out the repair, we can advise on the quickest route forward.

Why Choose Our Leak Detection Service?
We focus on accurate fault-finding, clear communication, and clean, respectful work in your home or premises.
What You Can Expect
- Non-invasive leak detection to reduce damage and disruption
- Clear explanation of what we’ve found and what it means
- Honest repair advice and next steps
- Professional, tidy workmanship in your home or business
- Support for homeowners, landlords, and managing agents
Book Leak Detection
If you suspect a leak, don’t leave it to get worse. Contact us today to arrange leak detection in London and get clear answers fast.