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Leak Detection New Malden
Hidden water leaks in New Malden pinpointed without opening floors or walls — acoustic, thermal imaging and tracer gas detection with no find, no fee, from engineers who know New Malden buildings.
Local knowledge
New Malden housing, from a leak engineer's side
New Malden presents a blend of inter-war semi-detached homes and larger detached properties, many with solid concrete ground floors rather than suspended timber. Plumbing systems often feature a mix of original galvanised steel and post-war copper. The prevalence of solid floors means leaks from underground pipes manifest as localised damp patches, requiring accurate sourcing to avoid unnecessary floor breaking. Properties frequently have complex landscaping that conceals external pipe runs.
Engineer's note
For New Malden's solid-floor properties, our approach prioritises non-invasive thermal imaging and pressure decay testing to accurately target excavation points, avoiding unnecessary destruction.
Covered in New Malden
- 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 New Malden
01
Underground Supply Leak Localisation
Leaks in pipes under solid concrete slabs cause rising damp patches. We use a combination of acoustic floor plate sensors to listen for leaks and thermal imaging to map the extent of subsurface cooling, triangulating the breach point before core drilling.
02
Galvanised Steel Pipe Tuberculation
Internal rust build-up (tuberculation) in galvanised steel pipes restricts flow and masks leak sounds. We conduct a flow pressure decay test to confirm a leak, then use pipe tracing equipment to guide sectional replacement, avoiding full re-pipe where unnecessary.
03
Garden Irrigation & External Tap Leaks
Complex garden watering systems and frost-damaged external taps leak into the foundation zone. Tracer gas introduced into the isolated external line is the most reliable method, as acoustic methods are ineffective in open ground.
04
Air Lock or Leak Differentiation in Low Pressure Systems
Symptoms of air locks in old galvanised systems mimic those of a leak. We use digital pressure logging and acoustic monitoring over a 24-hour period to identify the characteristic pressure drop pattern of a leak versus the static pattern of an airlock.
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 New Malden — FAQs
How quickly can you attend a leak in New Malden?
Same-day appointments are usually available in New Malden and across Kingston upon Thames, 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 New Malden?
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 New Malden properties?
Yes — New Malden presents a blend of inter-war semi-detached homes and larger detached properties, many with solid concrete ground floors rather than suspended timber. Plumbing systems often feature a mix of original galvanised steel and post-war copper. The prevalence of solid floors means leaks from underground pipes manifest as localised damp patches, requiring accurate sourcing to avoid unnecessary floor breaking. Properties frequently have complex landscaping that conceals external pipe runs.
Can you provide a report for my insurer?
Every New Malden detection visit can produce an insurer-ready trace and access report — cause, precise origin, methods used, moisture map and photos — typically within 48 hours.
Nearby in Kingston upon Thames
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ReadWhere we work
New Malden & Kingston upon Thames
Map data © OpenStreetMap contributors.
Losing water in New Malden?
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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