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Pinhole or Holiday testing, is a commonly used method for precise roof leak detection, primarily because it offers several advantages which make it an effective and efficient solution. This technique involves the use of specialised electronic equipment to identify and locate even minute holes or punctures in newly-installed or existing flat roof membranes which are difficult or impossible to see with the naked eye. As an independent test house, in the 1980s Thornton Consulting pioneered this non-destructive, electronic method as an alternative to the more traditional flood testing procedure. Here are some of the reasons why pinhole testing is now widely used in locating the origin of the breach:

  1. Accuracy: Pinhole testing his highly accurate and can identify the exact point the waterproofing has been penetrated. Pinpointing the exact location of the breach allows for prompt repairs without the need for further extensive and costly exploratory work.
  2. Non-destructive: Pinhole testing uses a phosphor bronze brush, swept across the surface of the membrane to identify breaches. It is, therefore, non- destructive and does not require an invasive procedure to be affective avoiding any disruption to the roof structure and reduces the potential for additional damage during the detection process.
  3. Time and cost-effective: Pinhole testing is a relatively quick process, saving time and minimising inconvenience or the call-back of Roofing Contractors to rectify the defect. It also reduces the overall cost of roof leak detection since it eliminates the need for extensive labour, material replacement or unnecessary repairs.
  4. Versatility: This method of testing can be used on various types of roofing materials, including single-ply membranes such as pvc and tpo, liquid applied membranes and others. This versatility makes it applicable for a wide range of roof coverings used throughout the UK and Ireland property sector. Building Developers, Roofing Contractors and Material Manufacturers benefit from the reassurance that the waterproofing system is sound before sign-off.
  5. Early detection: By identifying leaks at an early stage, pinhole testing helps to prevent further damage to the roof and the interior of the building. Even the smallest puncture in the waterproofing material can increase in size over time. An early resolution will avoid more serious issues or leaks developing in the future and ensures the long-term lifespan of the roof, when undertaken regularly as part of a maintenance programme avoiding the cost of a premature replacement.

The highly-skilled Consultants and Field Testers in the Thornton Consulting team of professional operatives will survey and assess whether the waterproofing material is suitable for electronic testing or advise on alternative detection methods. All testing services are carried out to the highest level of competency and always in-line with the company’s customer-focused core values.  For more information please call us on 01342 410508 or use the Contact Form to get in touch.