Specialist Water Leak Investigations Across London & Surrey
Every leak found. Every source confirmed. Full written report within 24 hours.
Professional Water Leak Investigation
A water leak investigation is a systematic process of using specialist detection equipment to locate the precise source of a water leak within a building — without opening up walls, floors or ceilings until the source has been confirmed. The goal is to minimise disruption, reduce the cost of reinstatement and provide clear, evidenced findings for insurance or legal purposes.
Our leak investigation service uses a combination of complementary detection methods, each suited to different leak types and building configurations. By combining methods, we achieve a high level of accuracy that significantly reduces both the access work needed and the risk of the repair failing to resolve the problem.
What Triggers a Leak Investigation?
You may need a professional water leak investigation if:
- ✓You have a persistent damp patch on a ceiling, wall or floor with no obvious cause
- ✓Your water meter is running when no water is being used
- ✓Your central heating system is losing pressure regularly
- ✓You can hear water running in walls or floors
- ✓Your water bill has increased unexpectedly
- ✓You have had flood damage and need to confirm the source for insurance
- ✓Your insurer has asked for a trace and access report
- ✓You are buying or selling a property with unexplained damp
Our Investigation Methods
Thermal Imaging
Infrared cameras detect temperature anomalies in building surfaces. Water-affected areas have distinctive thermal signatures that allow us to map water pathways through floors, walls and ceilings non-invasively.
Acoustic Detection
Sensitive microphones and listening rods amplify the sound of water escaping from pressurised pipes. We can locate leaks in supply pipes, central heating systems and pressurised drainage through concrete, screed and structural elements.
Tracer Gas
Hydrogen/nitrogen tracer gas pressurised into the suspect pipe circuit escapes from the leak and rises to the surface. A precision gas sniffer detects concentrations of less than 1 part per million, locating the leak to within centimetres.
Endoscopy
Flexible cameras fed into access holes, pipe runs and voids allow us to visually inspect pipework and structure in confined spaces without major opening up.
Dye Testing
Fluorescent dye introduced into drainage systems traces flow paths and identifies connection points, confirming drainage-related water ingress sources.
Moisture Mapping
Systematic moisture meter surveys map the extent of water-affected areas and help identify the direction and origin of water movement through the structure.
The Investigation Report
Every investigation includes a comprehensive written report delivered within 24 hours of the on-site survey. The report includes:
- ✓Summary of symptoms and investigation brief
- ✓Description of all detection methods used and their findings
- ✓Confirmed leak location with photographic evidence and location plan
- ✓Assessment of damage extent and secondary effects (mould, structural impact)
- ✓Recommended repair scope with access and reinstatement requirements
- ✓Indicative costings for repair and reinstatement
- ✓Statements suitable for insurance claim submission or legal evidence
Can you investigate leaks in commercial properties?
Yes. We investigate water leaks in residential and commercial properties including offices, retail premises, hotels, care homes and light industrial buildings.
What if the leak is in a shared or communal pipe?
We will investigate and report on the source of the leak. For leaks in shared or communal pipework, the findings will clarify responsibility, which is often required to determine which party’s insurance policy applies.
How accurate is your leak location?
Using tracer gas, we typically locate leaks to within 2–5cm. Acoustic and thermal methods locate to within a few hundred millimetres in most substrates. We will advise on the level of accuracy achievable before we start.
Ready to Get Started?
Surveys available across London and Surrey. Same-day attendance available.
Frequently Asked Questions
How quickly can you attend in this area?
We aim to attend damp, mould and leak inspections within 2–5 working days. For urgent situations — active water ingress, mould affecting health, or pre-sale requirements — we offer same-day and next-day emergency attendance. Call 0800 054 1524 to check availability.
What types of damp do you treat here?
We treat all types of damp: rising damp (ground moisture rising through walls), penetrating damp (moisture entering through external walls or roof), condensation damp (from poor ventilation), and leak-related damp from plumbing or drainage failures. Every survey identifies the root cause before treatment is recommended.
Are your reports accepted by insurers and solicitors?
Yes. All our damp surveys, mould inspections and leak detection reports are written in a format accepted by all major UK insurers (Aviva, AXA, Direct Line, LV, Zurich) and by solicitors for property disputes and conveyancing. Reports are signed by a qualified inspector with full photographic evidence.
Do you provide Awaab’s Law compliant reports for landlords?
Yes. We provide Awaab’s Law compliant investigation and remediation reports for landlords and housing associations across our coverage area. Under the Social Housing Regulation Act 2023, social landlords must investigate and act on damp and mould within strict timeframes. Our reports document every stage of the inspection and treatment process.
What is the typical cost of a damp survey?
A professional damp survey typically costs £150–£350 depending on property size and complexity. This includes a full written report with moisture readings and photographic evidence. Call 0800 054 1524 for a quote specific to your property.