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
Applies to leaks starting in your own property; pinpointing a neighbour's counts as a find.
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
Hidden Leaks in Back-Addition Corners
The back-addition kitchens and bathrooms common in Lewisham's Victorian and Edwardian terraces concentrate pipework in a single, often damp corner. This creates a perfect hidden-leak hotspot where water damage can spread unseen behind walls and under floors. A musty smell or damp patch in these areas is a clear sign to call us immediately.
Leaking Lead or Old Iron Pipes
Original plumbing in period properties often used lead or galvanised iron pipes, which corrode and fail over decades. A sudden drop in water pressure or discoloured water can signal a pinhole leak or a major failure in these ageing systems. This requires urgent detection and replacement to prevent structural damage and water contamination.
Burst Pipework in Unheated Extensions
Back-addition extensions in these terraces are frequently less insulated than the main house. During cold snaps, pipes in these spaces are first to freeze and burst. If you hear running water when all taps are off or see sudden damp in a kitchen corner, shut off the water and call our 24/7 team.
Leaks Under Suspended Timber Floors
Ground floors in these period homes are typically suspended timber. A leak from the concentrated pipework above can drip down, pooling in the dark, ventilated space beneath. Warping floorboards, a persistent damp smell, or visible mould along skirting boards are urgent signs that need our leak detection specialists.
How an out-of-hours call runs here
Maisonettes, side returns and a wet ceiling in Lewisham
What we detect
Leak detection services in Lewisham
Leak Detection
24/7 Emergency Detection
Acoustic Detection
Fast Leak Detection
Thermal Imaging
Non-Invasive Leak Detection
Tracer Gas
24/7 Emergency Response
Underground Leaks
Emergency Underground Detection
Heating Leaks
Emergency Heating Leaks
UFH Leaks
24/7 Emergency Response
Trace & Access
Emergency Leak Detection
Leak Repair
Emergency Leak Response
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.
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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, so long as the leak is one arising inside your own property in Lewisham: attend, fail to locate it, and you are not charged the detection fee. It is not cover against the leak being someone else's. Where the trace ends at a neighbouring property, a communal riser or the mains before your boundary, we have located it and the visit is payable.
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.
We are the lower maisonette and water is coming from above. The upstairs neighbour will not open the door.
Nobody is going to make them, so the work goes in two stages. Everything that can be established from below gets established: where the water enters, how fast, whether it stops when particular supplies are shut, and whether the pattern follows someone using a bathroom. That evidence usually persuades a reluctant neighbour, and if it does not it goes to the freeholder or the buildings insurer, who have more leverage than either of you at three in the morning. Keep a simple timeline in your phone notes, because dates and times are what an absent freeholder responds to.
Does a Blackheath period house get handled differently from a Catford terrace?
The diagnosis is the same. What changes is what anyone is prepared to disturb. In a protected or listed building the overnight job stops at closing the supply and protecting original floors, plaster and joinery, and the tracing that follows is deliberately non-destructive. In a standard terrace there is more room to lift a board and look, which sometimes means a leak can be confirmed the same night rather than the next day. Where a property is listed, the local authority conservation team can usually confirm what may be opened without consent.
Two maisonettes, two front doors, one leak. How does a single visit get arranged?
By agreeing a time before anyone travels rather than hoping both doors open. In practice one household usually calls and the other is persuaded afterwards, which is why the call is worth making early in the evening rather than at midnight. Where only one flat will give access, the visit still goes ahead and establishes what it can from that side, which is often enough to identify the direction and the likely fitting. The second visit then has a specific question to answer rather than a general one.
Our house steps down a slope and water collects at the back. Does the ground level matter?
It matters a great deal, and it is under-appreciated on these hillsides. Where a garden or a patio has been built up over the years, the external ground can end up level with or above the internal floor, which bridges the damp proof course and lets water in at the back of the house whenever it rains hard. That is not a plumbing fault, and no amount of pipe tracing will solve it. The signs are seasonal wetness along one wall, usually the uphill one, with a tide mark rather than a clean patch, and no movement on the water meter. Lowering the external level, clearing a drainage channel or fitting a French drain is the answer. Ruling the supply out first is still worth doing, because the two can happily coexist.
Read before you book
Leak detection guides
How to Choose a Leak Detection Company in London: Speed is Everything
Choosing a leak detection company in London comes down to one critical factor: response speed. Here’s how to ensure you get immediate, 24/7 action.
ReadCheap Leak Detection in London: What's the Real Cost of a Slow Response?
Opting for 'cheap' leak detection can lead to massive hidden costs from escalating damage. True value lies in immediate, 24/7 emergency response to limit destruction.
ReadNo Find, No Fee Leak Detection Explained: Your Guarantee of Results
Our 'no find, no fee' guarantee means you pay nothing if our emergency engineers can't locate your leak. It's our commitment to fast, effective results, day or night.
ReadTrace and Access Insurance Claims: Your Step-by-Step Guide
A fast, clear guide to navigating a trace and access insurance claim after a leak, detailing the immediate steps and the professional documentation required.
ReadSigns of a Hidden Water Leak at Home, and What Each One Proves
Most lists of leak symptoms tell you what to look for and stop there. The more useful question is what each sign proves on its own, because several of the classic indicators have entirely innocent explanations and two of them are nearly conclusive.
ReadHow Leak Detection Works: The Methods, What Each One Reads, and Where Each One Fails
Leak detection is not one technique. It is a sequence: prove there is a leak, work out which system it is on, then use the method that suits the pipe, the floor and the failure. Here is how each method works and what defeats it.
ReadLeak detection across London
Losing water in Lewisham?
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