Tracer Gas Leak Detection in North London

If you suspect a hidden water leak but cannot locate the source, our tracer gas leak detection service provides a precise and non-invasive way to identify the problem.

At Leak Detect, we use professional tracer gas equipment to trace leaks in underground, external, and concealed pipework. This method allows us to pinpoint the leak location accurately while avoiding unnecessary disruption. All findings are documented in a clear report suitable for repair works and insurance claims.

What is Tracer Gas Leak Detection?

Tracer gas leak detection is a highly effective method used to locate hidden leaks in water pipework. A safe, non-toxic gas mixture is introduced into the system, which escapes at the point of the leak. Using sensitive detection equipment, we trace the gas above ground to accurately locate the source.

Therefor this method is particularly useful where leaks are not visible and cannot be identified using conventional techniques. It is widely used for underground pipes, external supply lines, and pipework beneath floors.

In practice, this allows us to narrow down the leak location more precisely before any repair work begins.

Engineer carrying out tracer gas leak detection to locate hidden water pipe leak

When is this method used?

Tracer gas is particularly useful when the leak cannot be seen and conventional checks are inconclusive.

  • Leaks in underground or external pipework
  • Unknown leak locations with no visible signs
  • Persistent pressure loss in a system
  • Leaks beneath floors, driveways, or landscaped areas
  • Situations where non-invasive detection is required

How tracer gas leak detection is carried out on site

Tracer gas is introduced into the pipework using a controlled manifold and regulator, allowing us to safely pressurise the system without exceeding typical operating or mains supply pressures. This ensures the test is carried out in a controlled manner while protecting the integrity of the pipework.

The gas is then able to escape at the point of the leak, where it can be detected above ground using sensitive equipment.

For this reason, tracer gas testing is often used when a leak is strongly suspected but cannot be confirmed visually.

  • Initial assessment of the system and symptoms
  • Isolation and preparation of the pipework
  • Introduction of tracer gas into the system
  • Surface detection using specialist gas sensors
  • Pinpointing the exact leak location
  • Recording findings for reporting

What you receive after the visit

Where possible, we aim to reduce unnecessary disruption by identifying the most likely leak location before any intrusive work is considered. This helps homeowners, landlords, and property managers move forward with repairs more efficiently and with clearer evidence in hand.

Once testing is complete, we explain the findings clearly so you can decide on the next step with confidence.

  • Fixed-price leak detection visit
  • Accurate identification of the leak location
  • Clear written report
  • Photographic evidence where applicable
  • Recommendations for repair
  • Documentation suitable for insurance claims

Is tracer gas leak detection safe?

The tracer gas used during testing is a safe, non-toxic mixture commonly used for leak detection work. It is suitable for residential and commercial environments when applied correctly using specialist equipment.

Once testing is complete, the gas dissipates naturally and does not cause damage to the pipework or surrounding property.

Why choose tracer gas leak detection?

Tracer gas leak detection is often chosen where accuracy matters and access is limited. It is especially useful for concealed or underground pipework, where the leak cannot be seen directly and unnecessary opening-up needs to be avoided.

Because the gas can escape through very small openings, it helps narrow down the most likely leak location with minimal disruption. This makes it a useful option for both residential and commercial properties where a non-invasive approach is preferred.

  • Non-invasive and minimal disruption
  • Highly accurate for hidden leaks
  • Effective for underground and external pipework
  • Suitable for complex or hard-to-access systems

Related leak detection services

We use a combination of specialist leak detection methods, selected based on the system and access available, to support the investigation.Each method is selected based on the specific conditions of the property to ensure accurate results with minimal disruption.

Our 3-Step Leak Detection Process

Schedule a Call & Fixed Price

  1. Quick call to understand the issue
  2. Online pre-assessment completed
  3. Clear fixed price agreed upfront

Leak Detection Inspection & Survey

  1. On-site inspection using specialist equipment
  2. Non-invasive methods where possible
  3. Accurate fault location identified

Report & Recommendations

  1. Detailed report with photos
  2. Clear findings and repair advice
  3. Quotation provided for next steps