Flat Roof
Leak Investigations
With our advanced detection methods and commercial expertise, we provide comprehensive flat roof leak investigation services for large-scale buildings
Detecting leaks across the UK
Testing of flat roof waterproofing membranes and coverings
Thornton Consulting specialises in comprehensive flat roof leak investigation and inspections for commercial buildings, industrial facilities, retail centres, and large-scale residential developments across the UK. Our focus is on complex flat roofing systems commonly found in warehouses, office buildings, manufacturing facilities, and shopping centres.
We offer a complete range of flat roof leak detection and investigation techniques specifically developed for large commercial and industrial buildings across the UK.
Thornton Consulting was established in 1986 and pioneered electronic leak detection methods for commercial flat roof waterproofing systems.
The management team have over 60 years experience between them and are specialists in commercial flat roof investigation. We have a highly qualified team of consultants and engineers covering the UK's major commercial centres.
How We Investigate Commercial Flat Roofs
Our primary investigation method utilises Electronic Leak Detection specifically calibrated for large commercial flat roof systems, including both the "Wet" Method (Low Voltage) and the Holiday or Pinhole test for comprehensive coverage.
These advanced techniques are particularly effective on the extensive flat roof areas typical of commercial buildings. For specialised commercial roofing systems with non-conductive decks, we deploy our differential pressure testing methodology.
Both test methods rely on the electrically conductive properties of the substrate and insulating properties of the waterproofing for accurate detection of breaches and is suitable for most types of membranes.
The test can be undertaken to both horizontal and vertical waterproofing, ensuring the entire roof is tested.
In some circumstances, however, electronic testing is not possible. For example, EPDM membranes are electrically conductive, in which case Thornton Consulting may be able to offer our Differential Pressure Test, whereby air is drawn through surfactant over laps, thereby testing them for integrity.
Differential Pressure Testing
Our Differential Pressure Testing of waterproofing membranes service was developed as an additional technique for roof leak detection when electronic testing is inappropriate or technically incorrect for a specific roof construction or membrane type, such as non-conductive timber deck or EPDM membrane.
It is a non-destructive test which works by reducing pressure on an area of waterproofing membrane within a vacuum chamber and by drawing air through a surfactant applied over membrane laps, we can test them for integrity.
As with other electronic test methods, Differential Pressure Testing has replaced the need for flood testing in many circumstances and provides an efficient and cost-effective solution for roof leak detection.
