Leak Detection Specialists in London

Why Non-Invasive Leak Detection Matters in London Properties

Water leaks in London's high-density apartment blocks and commercial buildings are rarely straightforward. A leak in one flat can penetrate concrete slabs, travel through voids, and cause damage in properties two or three floors below. The traditional approach — opening up walls and floors until the leak is found — is expensive, highly disruptive, and often causes more damage than the leak itself.

Our apartment leak detection specialists use advanced non-invasive technology to locate the precise source of a leak before any access work begins. This means the only area opened up is the exact location of the fault — protecting your property, minimising disruption to residents, and significantly reducing the overall cost of the investigation and repair.

For block managers and managing agents, this approach also produces cleaner insurance documentation — a precise leak location report with photographic evidence, rather than a series of exploratory openings that complicate the claim.

Our Leak Detection Services Cover

Acoustic Leak Detection

Highly sensitive ground microphones and electro-acoustic sensors detect the distinct frequency of escaping water beneath concrete floors and behind dry-lined walls — without any structural damage.

Thermal Imaging

Infrared cameras map surface temperature differentials to trace hot water pipe runs and visualise moisture plumes hidden behind walls, ceilings, and floor finishes.

Tracer Gas Technology

A safe, inert gas mixture (95% nitrogen, 5% hydrogen) is introduced into the pipework. Hydrogen escapes through the leak and rises vertically, where our sensitive detectors locate the exact point.

Moisture Mapping

Calibrated damp meters and hygrometers produce a precise map of all affected areas, including hidden moisture within floor builds and behind plasterboard — essential for accurate drying programmes.

Investigation

Non-invasive survey using acoustic, thermal, and tracer gas technology to pinpoint the leak source.

Insurance Report

Comprehensive written report with photographic evidence — formatted for building insurers and loss adjusters.

Structural Drying

Industrial dehumidifiers and air movers extract moisture from the building fabric to target levels.

Reinstatement

Full restoration of all affected finishes — plasterboard, floor coverings, decorating, and joinery — to original specification.

Leak Detection for Block Managers & Managing Agents

Water leaks in multi-storey residential blocks create complex liability issues between leaseholders, freeholders, and building insurers. Our central London leak detection services for block managers include rapid response, precise location, and full insurance documentation — minimising the time a dispute remains unresolved and reducing the risk of secondary damage escalating costs.

We work with managing agents across London and understand the specific requirements of block insurance claims.

Commercial Leak Detection in London

For commercial tenants, office landlords, and retail property managers, a water leak can halt operations, damage high-value equipment, and breach occupancy agreements. Our commercial leak detection contractors in London provide rapid, non-invasive investigation with minimal disruption to business operations.

We provide out-of-hours investigation where required and can work around business hours to minimise the impact on trading operations.

What is trace and access leak detection?

Trace and access describes an investigation approach used for reported water issues. The appropriate methods, the available information and the access arrangements depend on the property and reported condition. A service page cannot diagnose the source of a particular water issue or confirm insurance cover.

How do you find water leaks under concrete floors or behind walls?

The investigation approach is agreed for the reported condition, available property information and access arrangements. Relevant information may include previous reports, photographs, meter readings and visible symptoms. The site does not use this general guidance to diagnose a particular property.

Do you carry out the repairs after locating the leak?

A proposed remedial or reinstatement scope can be discussed after investigation information and the relevant project boundaries have been reviewed. The extent of any repair, drying or reinstatement work is agreed for the individual project; it is not assumed from a general service page.

How quickly can you respond to an emergency leak?

Availability is confirmed for each enquiry. Please share the property location, reported condition, access constraints and any available information so the team can advise on an appropriate next step.

What documentation do you provide for insurance claims?

The project documentation can include an investigation report, photographic evidence, moisture-survey information and an agreed schedule of remedial works. If information is needed for an insurance claim, the policyholder should confirm their insurer's requirements before work begins.

Do you work with block managers and managing agents?

Yes. The team can discuss investigation information, access coordination and records for managed-property requirements. Any proposed documentation should be agreed with the relevant property team; an insurer or leaseholder may have separate requirements.

Further Reading

Read our in-depth guide to non-invasive apartment leak detection technology in London.