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Leak Detection Feltham
Hidden water leaks in Feltham pinpointed without opening floors or walls — acoustic, thermal imaging and tracer gas detection with no find, no fee, from engineers who know Feltham buildings.
Local knowledge
Feltham housing, from a leak engineer's side
Feltham is largely interwar and post-war suburban housing, with long runs of semi-detached and terraced homes, ex-local-authority estates and newer infill developments. Many properties still carry original buried supply pipes, older copper heating and mixed later extensions built over solid slabs. Leaks hide in the ground and under the floors here: a break on an ageing underground supply pipe can run for months under a lawn or drive, while an underfloor heating weep shows only as a warm patch or a slow, stubborn drop in boiler pressure long before any water is seen indoors.
Engineer's note
In Feltham the usual culprits are buried supply pipes and heating cast into slabs, both invisible until the bill or the boiler gauge gives them away. We locate underground leaks with ground microphones and slab leaks with thermal imaging, digging or breaking out only at the fault. Fixed fee agreed at booking, with an insurer-ready trace and access report.
Covered in Feltham
- 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
What fails here
Common leak problems in Feltham
01
Underground supply pipe losing water
Feltham's older semis are frequently fed by original metal supply pipes that corrode and split underground. The leak drains into the soil, so the first sign is often a higher bill or a soft, always-damp patch on the lawn. We survey the buried line with ground microphones and correlation equipment to pinpoint the break, so digging is confined to the fault rather than the whole run.
02
Underfloor heating leak in a slab
Extensions and refurbished ground floors here often have heating pipes cast into a concrete slab. A leak in that circuit shows as a warm floor patch, damp edges or repeated pressure loss rather than visible water. We thermally image the slab to follow the pipe layout and locate the leak, then break out one small area over the fault instead of lifting the whole floor.
03
Repeated boiler pressure loss
A sealed system that keeps needing a top-up is losing water somewhere on the circuit, commonly a corroded joint or buried pipe under the floor in these houses. We pressure-test the heating and use thermal tracing to separate a real underfloor leak from a passing valve or failing expansion vessel, so the repair addresses the actual cause.
04
Damp in a ground-floor extension
Rear extensions built over a slab can trap a slow leak in the screed, showing as damp along the base of a wall or lifting flooring. It is easily confused with penetrating or rising damp. We moisture-map the area and trace the buried pipework thermally to confirm it is a plumbing leak, then open the floor precisely at the source.
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.
Leak detection in Feltham — FAQs
How quickly can you attend a leak in Feltham?
Same-day appointments are usually available in Feltham and across Hounslow, and next-day almost always. If water is actively escaping, say so when you book — live leaks are prioritised and we can talk you through isolating the supply while the engineer travels.
What does leak detection cost in Feltham?
A fixed fee agreed at booking — typically £250–£450 for a domestic detection visit — covered by no find, no fee. That includes pressure testing per circuit, thermal imaging, acoustic survey and moisture mapping. Repairs are quoted separately before any work starts.
Do you know Feltham properties?
Yes — Feltham is largely interwar and post-war suburban housing, with long runs of semi-detached and terraced homes, ex-local-authority estates and newer infill developments. Many properties still carry original buried supply pipes, older copper heating and mixed later extensions built over solid slabs. Leaks hide in the ground and under the floors here: a break on an ageing underground supply pipe can run for months under a lawn or drive, while an underfloor heating weep shows only as a warm patch or a slow, stubborn drop in boiler pressure long before any water is seen indoors.
Can you provide a report for my insurer?
Every Feltham detection visit can produce an insurer-ready trace and access report — cause, precise origin, methods used, moisture map and photos — typically within 48 hours.
Read before you book
Leak detection guides
Leak Detection · 11 min read
How to Choose a Leak Detection Company in London (Without Getting Burned)
A plain-English buyer's guide to hiring a leak detection firm in London: why cheap hourly rates backfire, what real equipment looks like, how to read no-find-no-fee small print, and who is actually responsible for the pipe.
ReadPricing · 11 min read
The Real Cost of Cheap Leak Detection in London: A Buyer-Beware Guide
A low headline price for leak detection can end up the most expensive route of all. Here is how hourly billing, single-method surveys and non-compliant reports quietly inflate your final bill, and how to compare fairly.
ReadLeak Detection · 11 min read
No Find, No Fee Leak Detection: What It Really Means (and the Small Print to Check)
No find, no fee sounds like a safe bet, but the phrase means very different things depending on who you book. Here is how a genuine guarantee works, the carve-outs that quietly reintroduce charges, and the questions that protect you before anyone turns up.
ReadWhere we work
Feltham & Hounslow
Map data © OpenStreetMap contributors.
Losing water in Feltham?
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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