Accurately identifying the precise location of water ingress in the roof area requires a diligent assessment of the specific roof construction and the membrane type, in order to determine the appropriate testing method. Independent Test House, Thornton Consulting provides a comprehensive roof leak detection service for clients throughout the UK and the Republic of Ireland. Their DifferentialPressure Testing technique was developed for when electronic testing is technically incorrect or isn’t suitable for the membrane category or the particular roof construction, as found for example with EDPM membranes or a timber decks which are non-conductive.
Differential Pressure Testing for roof leaks is a non-destructive, and cost-effective method that assesses a roof's integrity by creating a pressure differential between its interior and exterior. This process involves sealing the building and pressurising it while simultaneously measuring the pressure difference. If the roof is intact, the pressure should remain stable. However, if there are leaks, the pressure will drop, indicating compromised areas. Thornton Consulting’s experienced team of Field Technicians use specialised vacuum chamber equipment to pinpoint and identify leaks precisely. Air is drawn through a surfactant which has been applied over the membrane laps, enabling integrity testing. This method is particularly effective for flat or low-slope roofs, where water infiltration can be challenging to detect through other means. It provides a reliable and efficient way to diagnose and address potential roof vulnerabilities.
This testing tool has proved to be an invaluable asset in the wide range of techniques employed by Thornton Consulting for verifying the integrity of newly installed waterproofing systems, reassuring clients that their roof is sound and watertight. Differential Pressure Testing is valued by roofing operatives, main contractors and manufacturers of waterproofing materials where traditional testing methods are not viable. For the past four decades, their client-focused leak detection service has been procured by owners of commercial, industrial properties, municipal car parks, hospitals and large residential blocks. Ensuring the roof’s integrity and timely resolution of any breaches gives peace of mind that the investment is secured.
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