Leak Detection City of London
Hidden water leaks in City of London pinpointed without opening floors or walls — acoustic, thermal imaging and tracer gas detection with no find, no fee, covering Barbican, Bank, Moorgate and Aldgate.
No find, no fee
You only pay the detection fee if we locate the leak.
All of City of London
Same-day and next-day cover across the whole borough.
Insurer-ready reports
Trace & access documentation loss adjusters accept.
Multi-method survey
Acoustic, thermal, tracer gas and moisture on every visit.
Local knowledge
How City of London properties leak
City of London housing is dominated by the Barbican estate and commercial buildings with residential conversions. Concrete-frame buildings like the Barbican channel water along slab soffits, so the visible drip is rarely above the actual failed pipe.
Knowing the local building stock matters: it tells us where the pipework usually runs, which materials to expect, and which detection method will get to the answer fastest — before we arrive.
Covered in City of London
- Hidden leaks under floors and in walls
- Underground supply pipe leaks
- Central heating and boiler pressure loss
- Underfloor heating loop leaks
- Flat-to-flat leak origin investigations
- Trace & access reports for insurance claims
Three methods, one marked point
Acoustic survey
Ground microphones and correlators follow the sound of escaping water through floors and ground.
Thermal imaging
Infrared cameras reveal wet patches and buried heating runs through the floor surface.
Tracer gas
A safe hydrogen mix escapes through the exact failure point and rises to our surface detector.
Common leak problems in City of London
Concrete Slab Water Tracking
In the City's concrete-frame buildings, water from a leak rarely drips directly below the source. It travels along the slab soffits and emerges far from the actual failed pipe, making visual identification impossible and requiring systematic electronic tracing to pinpoint the origin for insurer approval.
Residential Flat Water Ingress
Leaks in converted commercial buildings often originate in complex, shared service risers. Water can travel through floor voids and partition walls, damaging multiple properties. We provide the precise mapping insurers require to determine liability and prevent protracted disputes between leaseholders.
Concealed Heating Pipe Failures
Ageing central heating pipes are often embedded within the concrete structure. A pinhole leak can saturate the slab over weeks before appearing as a damp patch or ceiling stain elsewhere. Early detection with thermal imaging and acoustic equipment is critical to limit damage and substantiate the claim.
Failed Tanking & Basement Leaks
Many properties have lower-level or basement areas. Failed waterproof tanking or drainage systems lead to persistent damp, often misdiagnosed as a plumbing leak. Our investigation differentiates the source, providing the definitive report your insurer needs to authorise the correct, claimable repair.
From the forums
Leak Detection in City of London Concrete-Frame Flats
What we detect
Leak detection services in City of London
Leak Detection
Insurance Trace & Access
Acoustic Detection
Insurance-Approved Detection
Thermal Imaging
Insurer-Approved Leak Detection
Tracer Gas
Insurance-Compliant Leak Detection
Underground Leaks
Insurance-Compliant Detection
Heating Leaks
Insurance-Compliant Detection
UFH Leaks
Insurance-Compliant Detection
Trace & Access
For London Insurers
Leak Repair
Insurance-Ready Leak Resolution
Areas we cover in City of London
Also need an emergency plumber rather than detection? Emergency Plumber City of London →
Where we work
City of London coverage map
Map data © OpenStreetMap contributors.
How to Choose a Leak Detection Company in London for Insurance Claims
Selecting the right leak detection specialist is crucial for meeting insurer requirements on documentation and ensuring trace & access costs are recoverable. We outline the key procedural steps.
Leak detection in City of London — FAQs
How quickly can you attend a leak in City of London?
Same-day appointments are usually available in City of London, and next-day almost always. If water is actively escaping, tell us when you book — live leaks are prioritised and we can talk you through isolating the supply while an engineer travels.
Do you charge if you can’t find the leak?
No. Every detection visit in City of London is covered by our no find, no fee promise: if we attend a confirmed live leak and cannot locate it, the detection fee is waived.
Can you provide a report for my insurer?
Yes — trace and access reports documenting the cause, precise origin and affected areas are available for every City of London detection visit, typically within 48 hours. They are structured the way UK loss adjusters expect.
Which parts of City of London do you cover?
All of it — including Barbican, Bank, Moorgate, Aldgate. We cover every London borough, so coverage never depends on which side of a postcode line you live.
Why does a leak in a Barbican flat show up far from where the water starts?
Concrete-frame buildings let water run along slab soffits and structural voids until it finds a low point or a crack to emerge from, so the stain can be a room or a floor away from the source. We use non-destructive tracing, moisture mapping and thermal imaging to follow the path back to origin, rather than opening ceilings and walls at the point where you first see the damage.
Can you produce a report our managing agent and insurer will accept?
Yes. We provide a written trace-and-detect report with findings, images and the likely source, aimed at freeholders and managing agents who need to establish whether a communal riser or a demised pipe is responsible. A typical fixed detection fee runs around £250 to £450 as a UK trade cost-guide range. The report supports the responsible party's insurance claim without committing you to speculative works.
Read before you book
Leak detection guides
How to Choose a Leak Detection Company in London for Insurance Claims
Selecting the right leak detection specialist is crucial for meeting insurer requirements on documentation and ensuring trace & access costs are recoverable. We outline the key procedural steps.
ReadThe Real Cost of Cheap Leak Detection in London for Insurance Claims
Opting for cheap leak detection in London can jeopardise your insurance claim. We detail the procedural requirements insurers have for trace & access to ensure your costs are recovered.
ReadNo Find, No Fee Leak Detection Explained for Insurance Claims
Our no-find-no-fee leak detection service is designed to support insurance claims by professionally locating hidden leaks and providing the documentation insurers require.
ReadA Step-by-Step Guide to Your Trace and Access Insurance Claim
Navigating a trace and access claim requires a methodical approach. We detail the essential steps, from the initial investigation by our engineers to securing your insurer's approval.
ReadHow to Spot the Signs of a Hidden Water Leak in Your Home
Identifying the hidden signs of a water leak is crucial for meeting insurer trace & access requirements and protecting your property.
ReadHow Professional Leak Detection Works: Methods Explained for Insurance Claims
Understanding the precise, non-invasive methods our engineers use to locate hidden leaks is crucial for supporting your insurance claim and documentation.
ReadLeak detection across London
Losing water in City of London?
Tell us the symptoms and your postcode. Fixed detection fee, agreed arrival window, no find no fee — confirmed before you book.
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