Leak Detection Lewisham
Hidden water leaks in Lewisham pinpointed without opening floors or walls — acoustic, thermal imaging and tracer gas detection with no find, no fee, covering Lewisham, Catford, Deptford, Forest Hill and Blackheath.
No find, no fee
You only pay the detection fee if we locate the leak.
All of Lewisham
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 Lewisham properties leak
Lewisham housing is dominated by Victorian and Edwardian terraces with period conversions. Back-addition kitchens and bathrooms in Victorian terraces concentrate pipework in one damp-prone corner — a frequent hidden-leak hotspot.
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 Lewisham
- 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 Lewisham
Back-Addition Pipework Leaks
The prevalence of Victorian and Edwardian terraces with period conversions means many properties have back-addition kitchens and bathrooms. This concentrates complex pipework in a single, often poorly ventilated corner of the property. This area is inherently damp-prone, creating a persistent hotspot for hidden leaks that accelerate pipe corrosion and structural damage.
Hidden Leaks in Party Walls
Terrace construction means plumbing for back-additions frequently runs within or along shared party walls. Leaks from these pipes can travel laterally through brickwork and joist ends, often manifesting as damp in an adjacent room or even a neighbouring property long before the source is apparent.
Deteriorated Lead & Imperial Iron
Original supply lines and waste stacks in these period properties were often lead or imperial-sized iron. These materials degrade over time, particularly at junctions with newer copper or plastic fittings added during conversions. Failure points are common where old pipework feeds the concentrated plumbing of a back-addition.
Suspended Floor Moisture Damage
Ground-floor back-additions in these terraces often have suspended timber floors. Persistent minor leaks from the concentrated pipework above can drip onto and saturate the subfloor, leading to rot and structural weakening. This moisture is often hidden until floorboards become spongy.
From the forums
Leak Detection Across Lewisham's Terraces and Conversions
What we detect
Leak detection services in Lewisham
Leak Detection
Technology-Driven Diagnostics
Acoustic Detection
Precision Underground Diagnostics
Thermal Imaging
Non-Invasive Thermal Diagnostics
Tracer Gas
Concealed Pipe Detection
Underground Leaks
Subsurface Leak Forensics
Heating Leaks
Thermographic Diagnostics
UFH Leaks
Technology-Driven Detection
Trace & Access
Precision Leak Location
Leak Repair
Precision Leak Investigation
Areas we cover in Lewisham
Also need an emergency plumber rather than detection? Emergency Plumber Lewisham →
Where we work
Lewisham coverage map
Map data © OpenStreetMap contributors.
How to Choose a Leak Detection Company in London: A Guide to Technology & Precision
Selecting a leak detection company requires evaluating their technology, methodology, and commercial sector expertise. Here's what to prioritise.
Leak detection in Lewisham — FAQs
How quickly can you attend a leak in Lewisham?
Same-day appointments are usually available in Lewisham, 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 Lewisham 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 Lewisham detection visit, typically within 48 hours. They are structured the way UK loss adjusters expect.
Which parts of Lewisham do you cover?
All of it — including Lewisham, Catford, Deptford, Forest Hill, Blackheath. We cover every London borough, so coverage never depends on which side of a postcode line you live.
My Forest Hill house has damp on a hillside wall. Is it a leak or the ground?
Hillside properties around Forest Hill and Honor Oak can show damp from ground moisture as well as from plumbing, so the two are easy to confuse. Non-invasive tracing, using moisture readings, thermal imaging and acoustic checks, helps establish whether a pressurised pipe is losing water before any wall is opened. A typical fixed-fee investigation runs in the usual UK trade cost-guide range of around 250 to 450 pounds.
There's a leak between two flats in a Lewisham conversion. Who is responsible?
In converted flats around Deptford and central Lewisham, shared or ambiguous supply runs make it hard to know which home a leak sits in. Locating the exact source first gives both parties clear evidence, which usually helps resolve who pays under the lease or between insurers. We focus on finding and confirming the source; responsibility itself depends on your lease terms and any freeholder or managing agent arrangements.
Read before you book
Leak detection guides
How to Choose a Leak Detection Company in London: A Guide to Technology & Precision
Selecting a leak detection company requires evaluating their technology, methodology, and commercial sector expertise. Here's what to prioritise.
ReadNo Find, No Fee Leak Detection Explained: How Advanced Technology Guarantees Precision
Our 'no find, no fee' policy is underpinned by advanced, non-invasive detection technology, providing landlords and commercial property managers with a precise, risk-free solution for locating hidden water leaks.
ReadA Step-by-Step Guide to Trace and Access Insurance Claims
A technical guide detailing the systematic process for trace and access insurance claims, from initial leak detection to final reinstatement, for property owners and managers.
ReadIdentifying the Signs of a Hidden Water Leak in Your Property
We detail the subtle, technical signs that indicate a hidden water leak, from unexplained meter activity to thermal imaging anomalies, crucial for property integrity.
ReadHow Leak Detection Works: The Methods Explained for Landlords & Commercial Properties
We explain the core technical methods—acoustic, thermal, tracer gas, and endoscopic inspection—used by our engineers to locate hidden water leaks with minimal disruption.
ReadLeak detection across London
Losing water in Lewisham?
Tell us the symptoms and your postcode. Fixed detection fee, agreed arrival window, no find no fee — confirmed before you book.
Book a detection visit