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Ealing, London

Leak Detection Ealing

Hidden water leaks in Ealing pinpointed without opening floors or walls: acoustic, thermal imaging and tracer gas detection with no find, no fee, covering Ealing, Acton, Hanwell, Southall and Greenford.

No find, no fee Same-day across Ealing Insurer-ready reports

No find, no fee

Covers leaks inside your own property. Identifying someone else's counts as finding it.

All of Ealing

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 Ealing properties leak

Ealing housing is dominated by Edwardian terraces, 1930s semis and purpose-built maisonettes. Edwardian houses here often keep original lead or iron rising mains; corrosion at the stop-tap joint under the front hall floor is a common find.

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 Ealing

  • 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.

What fails here

Common leak problems in Ealing

01

Corrosion at Stop-Tap Joint

In Edwardian terraces, the original iron or lead rising mains often corrode at the junction with the stop-tap beneath the front hall floorboards. This creates a persistent, slow leak that can saturate the subfloor timber and joists. Access typically requires lifting original floorboards, and we use acoustic listening devices to pinpoint the exact joint under pressure.

02

Maisonette Supply Pipe Leaks

Purpose-built maisonettes from the 1930s often have shared supply pipes that run through ceiling voids between flats. Corrosion at connection points or splits in copper piping from movement are common. Tracer gas testing is particularly effective here, as it can travel through wall cavities and floor voids to identify the precise flat of origin without invasive demolition.

03

Semis' External Pipework Failure

1930s semis frequently have original external soil stacks and overflows. Frost damage and degradation of iron or cast iron pipes lead to leaks at brackets or joints. Thermal imaging surveys from inside adjacent rooms can reveal cold spots and moisture trails, mapping the extent of water ingress through the brickwork.

04

Concealed Heating Pipe Leaks

In all Ealing property types, original or retrofitted central heating pipes are often concealed under suspended timber floors. Pin-hole leaks from corrosion or failed solder joints drip onto subfloor materials. We employ a combination of acoustic listening for pressurised systems and precise moisture mapping with hygrometers to trace the leak path back to its source.

What the housing stock means

Stacked bathrooms in converted terraces, and isolating one wet room at a time

Ealing's leak profile is shaped by conversion density. The Edwardian terraces of Ealing, Hanwell and West Ealing, and the older terraced streets through Southall, have been divided and subdivided more heavily than the surrounding boroughs, and a large share is licensed as houses in multiple occupation. The physical result is several bathrooms and kitchens added to a building originally designed with one, connected to a single soil stack because running a second was never economic. Alongside that sit the interwar cottage housing of the Cuckoo estate in Hanwell, 1930s semis through Greenford and Northolt, and newer blocks around Acton and Southall. For a licence holder the stacked wet room is the recurring fault: a shower tray junction or a failed tanking detail on the second floor discharges through the ceiling of the first, and because three separate bathrooms sit within a metre of each other, the obvious suspect is the wrong one more often than not. One practical caution applies whenever part of a system is taken out of use during an investigation in a multiply occupied house.

Areas we cover in Ealing

Also need an emergency plumber rather than detection? Emergency Plumber Ealing

Where we work

Ealing coverage map

Map data © OpenStreetMap contributors.

Don’t get caught out

How to Choose a Leak Detection Company in London: The Questions That Separate Them

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.

Read the guide

Leak detection in Ealing, FAQs

How quickly can you attend a leak in Ealing?

Same-day appointments are usually available in Ealing, 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?

Not on a leak arising within your own property that we cannot find: in Ealing that detection fee is waived. Trace it instead to a neighbour's pipework, a shared riser or the water main beyond your boundary and the fee stands, because that is a located leak, and it is the finding that moves the repair bill off you.

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 Ealing detection visit, typically within 48 hours. They are structured the way UK loss adjusters expect.

Which parts of Ealing do you cover?

All of it, including Ealing, Acton, Hanwell, Southall, Greenford. We cover every London borough, so coverage never depends on which side of a postcode line you live.

There are four bathrooms on one stack in our licensed HMO and a ceiling is staining. How do you identify which one without taking all four apart?

By flood testing them individually and in sequence, with a dwell period and a re inspection between each. The waste is plugged, the tray or bath is filled to a marked level, the level is checked after a timed interval to establish whether the vessel itself is losing, and the ceiling below is observed and moisture read before moving on. Between tests the stack is dye traced so that a failure at a branch connection or a pan connector is distinguished from a failure at the tray junction. A properly ordered sequence usually identifies the room on the first visit and identifies the component rather than just the room, which is the difference between one targeted repair and four speculative ones.

How does leak evidence relate to our HMO licence conditions and a damp complaint?

Persistent damp and mould is assessed as a hazard under the housing health and safety rating system, and a licensing authority looking at a complaint will want to see that the cause was investigated rather than the symptom decorated over. A dated detection report that names the failed component, records the tests that excluded the other candidates and states the position is the strongest evidence that the duty to investigate was discharged promptly. It also protects you the other way: where the cause turns out to be condensation from occupancy and ventilation rather than an escape of water, a documented negative on the plumbing is what lets you address the actual problem without being held to a repair that was never yours.

Parts of the system were isolated for several days during testing. Is there a water hygiene risk?

There can be, and a landlord carries a duty to assess and control the risk from legionella bacteria in a let property's water systems. Stagnation is one of the principal contributing factors, along with water sitting in the range where the organism multiplies and the presence of scale and biofilm for it to feed on. A dead leg created by capping a redundant branch during an investigation, or a section left charged and unused for a period, is exactly the condition to avoid. So isolated sections should be drained rather than left standing where that is practical, capped legs should be cut back to the live main rather than simply valved off, and outlets that were out of use should be flushed thoroughly before the property is handed back. We note any dead legs we find in the report.

A waste pipe gurgles and the ceiling below is damp. Are those connected?

They can be, through a mechanism that is not a leak in the ordinary sense. When a stack is inadequately vented, the slug of water discharging from one appliance draws air behind it and pulls the trap seals on other appliances on the same branch, which is what produces the gurgle. Once a trap has lost its seal, the appliance no longer holds water at the trap and the joint above it can be exposed to discharge from elsewhere on the branch, and in a converted house with several bathrooms added to one original stack this is a very common condition. The diagnosis is to observe trap seal loss while another appliance discharges, and the remedy is ventilation of the stack, usually with an air admittance valve or a relief vent, not a new pipe run.

Read before you book

Leak detection guides

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How to Choose a Leak Detection Company in London: The Questions That Separate Them

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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.

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Trace and Access: A Step by Step Guide to the Claim

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How Leak Detection Works: The Physical Principles and the Order a Survey Uses Them In

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