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Leak Detection Dulwich
Hidden water leaks in Dulwich pinpointed without opening floors or walls — acoustic, thermal imaging and tracer gas detection with no find, no fee, from engineers who know Dulwich buildings.
Local knowledge
Dulwich housing, from a leak engineer's side
Dulwich is characterised by larger Victorian and Edwardian villas, often with significant later alterations, and some inter-war semi-detached housing. Properties frequently feature complex roof spaces converted into bathrooms, adding multiple new wet rooms above original ceiling lines. Original drainage often combines clay and cast iron, with later plastic additions. Mature tree root systems are a significant factor for buried drainage infrastructure.
Engineer's note
Thermal imaging is particularly effective in Dulwich's large properties for visualising concealed leaks within deep wall cavities and across expansive roof spaces.
Covered in Dulwich
- 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 Dulwich
01
Roof Conversion Drainage Leaks
New bathroom waste lines installed in loft conversions are often poorly supported. Movement during use causes leaks at solvent-weld joints, with water tracking down inside partition walls that are difficult to access.
02
Cast-Iron Downpipe Fractures
Original cast-iron rainwater downpipes, often concealed within bay window structures, corrode from the inside. Leaks saturate wall cavities and only become apparent through internal damp patches far from the source.
03
Tree Root Intrusion
Extensive mature gardens mean tree roots frequently infiltrate and fracture buried clay drainage runs. This causes slow, persistent leaks that block and saturate the surrounding soil, leading to foundation damp.
04
Multi-Level Heating System Corrosion
Large, multi-storey properties with extended heating systems often suffer from poor inhibitor circulation. This leads to localised corrosion in radiator tails and valve connections on upper floors, causing pressurised leaks.
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 Dulwich — FAQs
How quickly can you attend a leak in Dulwich?
Same-day appointments are usually available in Dulwich and across Southwark, 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 Dulwich?
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 Dulwich properties?
Yes — Dulwich is characterised by larger Victorian and Edwardian villas, often with significant later alterations, and some inter-war semi-detached housing. Properties frequently feature complex roof spaces converted into bathrooms, adding multiple new wet rooms above original ceiling lines. Original drainage often combines clay and cast iron, with later plastic additions. Mature tree root systems are a significant factor for buried drainage infrastructure.
Can you provide a report for my insurer?
Every Dulwich 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
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.
ReadWhere we work
Dulwich & Southwark
Map data © OpenStreetMap contributors.
Losing water in Dulwich?
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