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Commercial Water Leak Detection

Expert trace and access, underground mains detection, and large-scale water ingress investigations for commercial properties across London and the Home Counties.

PrimeFix Group deploys advanced thermal imaging, acoustic survey, and tracer gas technology to locate hidden leaks in schools, hospitals, warehouses, hotels, offices, and other large commercial facilities without unnecessary structural damage.

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Complete the form and a specialist will be in touch within two hours.

Our Commercial Leak Detection Services

We provide a full range of specialist, non-destructive leak detection services tailored to the operational demands of commercial and large-scale properties.

Trace & Access Investigations

We precisely locate the source of escape-of-water incidents using thermal imaging, acoustic listening, and tracer gas technology, minimising disruption to your operations and producing detailed reports to support insurance claims.

Underground Water Mains Detection

Specialist acoustic and correlator equipment is used to detect and pinpoint bursts or failures in underground water supply pipes, reducing excavation to the exact area required and keeping site disruption to an absolute minimum.

Large-Scale Water Ingress Investigations

For complex ingress issues across roofs, facades, basements, and structural voids, we conduct comprehensive moisture mapping and thermal surveys to identify all points of failure, providing a clear remediation strategy.

Commercial Properties We Serve

Our engineers are experienced working in live and operational commercial environments, including:

  • Schools, Colleges & Universities
  • Hospitals & Healthcare Facilities
  • Care Homes & Nursing Homes
  • Hotels & Hospitality Venues
  • Office Buildings & Business Parks
  • Warehouses & Distribution Centres
  • Industrial Units & Factories
  • Retail Parks & Shopping Centres
  • Leisure Centres & Sports Facilities
  • Student Accommodation
  • Local Authority & Public Sector Buildings
  • Mixed-Use & Multi-Tenancy (HMO) Developments
Commercial Water Leak Detection

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Why Commercial Property Managers Choose PrimeFix

Commercial leak events are high-stakes. Undetected or misdiagnosed leaks in a school, hospital, or warehouse can mean operational shutdowns, structural damage, and significant insurance disputes. PrimeFix Group brings the precision, documentation, and professionalism that facilities managers, insurers, and loss adjusters rely on.

Non-Destructive Methods

We locate leaks without unnecessary damage to your structure, floors, or finishes, protecting your property and keeping your operational timeline on track.

Insurer-Grade Reporting

Every investigation produces a detailed technical report with findings, evidence, and recommended remediation, accepted by all major insurers for trace and access claims.

Minimal Operational Disruption

We work around your schedule, including out-of-hours and weekend attendance, to ensure leak detection causes the least possible interruption to your facility.

Fully Accredited & Insured

PrimeFix holds all relevant commercial accreditations and carries full public liability insurance, giving facilities managers and procurement teams complete peace of mind.

Our Accreditations

Advanced Detection Technology

We deploy the appropriate technology for each investigation, ensuring the most accurate result with the least intervention.

Thermal Imaging Surveys

Thermal Imaging Surveys

High-resolution FLIR cameras detect temperature differentials caused by escaping water beneath floors, behind walls, and within ceiling voids.

Acoustic Leak Detection

Acoustic Leak Detection

Precision microphones and correlator equipment listen for the unique frequency signature of pressurised water escaping from buried or concealed pipework.

Tracer Gas Testing

Tracer Gas Testing

A safe, inert hydrogen/nitrogen mix is introduced into the pipework system. Gas detection probes then pinpoint the exact leak location at surface level.

Moisture Mapping & Damp Investigation

Moisture Mapping & Damp Investigation

Calibrated moisture meters and relative humidity testing are used to map the extent of water damage and identify all active ingress points.

Pipework Pressure Testing

Pipework Pressure Testing

Pressure testing confirms the integrity of a pipework system following repair or as part of a planned maintenance inspection.

Underground Pipe Correlation

Underground Pipe Correlation

Electronic correlators are placed at two access points and analyse pipe vibration patterns to calculate the precise location of a buried leak.

Structural & Roof Void Inspection

Structural & Roof Void Inspection

Targeted inspection of roof structures, parapet walls, and building envelopes to identify the root cause of internal water ingress from above.

Insurance Claim Documentation

Insurance Claim Documentation

A comprehensive digital report is produced for every investigation, meeting the evidentiary requirements of insurers and loss adjusters for trace and access claims.

Commercial Water Leak Detection Case Study

School Water Supply Leak

A secondary school in Hertfordshire was experiencing a significant water loss issue, with approximately 1,000 litres of water being lost per minute from its mains water system. The leak was causing major concerns regarding water wastage, operational disruption, and escalating utility costs.

After a detailed survey, our team successfully identified the exact location of the underground leak. The findings were clearly documented and provided to the client, allowing targeted repairs to be carried out quickly and efficiently.


The leak was repaired, restoring the school’s water supply system to full operation and preventing the continued loss of approximately 1,000 litres of water per minute. By accurately locating the leak, extensive excavation work was avoided, reducing disruption to the school and significantly lowering repair costs.

Join the growing number of facilities managers, property owners, and insurers across London and the Home Counties who trust PrimeFix Group to resolve their most complex leak events.

Speak to a Commercial Leak Detection Specialist Today

Whether you’re dealing with an emergency leak event or planning a proactive survey, our team is available 24/7, 365 days a year. We’ll have a specialist on-site when you need them.

Commercial Leak Detection Across London & the Home Counties

We provide commercial water leak detection services throughout Greater London and the surrounding Home Counties, including:

Greater London

City of London, Westminster, Camden, Islington, Hackney, Tower Hamlets, Southwark, Lambeth, Wandsworth, Hammersmith & Fulham, Kensington & Chelsea, Ealing, Hounslow, Richmond, Kingston, Merton, Sutton, Croydon, Bromley, Lewisham, Greenwich, Bexley, Havering, Barking & Dagenham, Newham, Waltham Forest, Redbridge, Haringey, Enfield, Barnet, Harrow, Brent, Hillingdon

Bedfordshire

Luton, Bedford, Dunstable, Leighton Buzzard

Essex

Chelmsford, Brentwood, Basildon, Harlow, Epping, Chigwell, Grays, Romford

Kent

Dartford, Sevenoaks, Tonbridge, Maidstone, Gravesham, Hertfordshire, Watford, St Albans, Hemel Hempstead, Hertford, Stevenage, Welwyn Garden City, Hatfield, Radlett, Borehamwood, Potters Bar

Surrey

Guildford, Woking, Reigate, Epsom, Kingston upon Thames, Walton-on-Thames, Camberley, Farnham

Berkshire

Reading, Slough, Windsor, Bracknell, Maidenhead, Wokingham, Newbury

Buckinghamshire

High Wycombe, Milton Keynes, Aylesbury, Amersham, Chesham, Beaconsfield, Marlow

Cambridgeshire

Cambridge, Peterborough, Ely, Huntingdon, St Ives, Wisbech

Not sure if we cover your area? Call us on 02081080400. We’re always happy to advise.