Waterproofing Integrity Testing
USING TECHNOLOGY TO ESTABLISH THE PERFORMANCE OF WATERPROOFING
Detecting leaks across the UK
Testing of newly installed roof waterproofing membranes and coverings
Waterproofing integrity testing is for newly installed and existing roof membranes and coverings to ensure that they are free from breaches, which is particularly beneficial for roofers and contractors when completing a project, and is often a requirement prior to hand over of a roof to a main contractor.
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This test can also be undertaken at any point during a project, giving peace of mind to all parties that the waterproofing is free from defects as sometimes damage can occur to roofs on busy building sites, plus identify any potential problems before finishes such as green roofs and paving are installed.
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Electronic Leak Detection
The process involves electronic leak detection of the waterproof covering and is typically undertaken by one of two methods, depending on the roof build-up and waterproofing to be tested.
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.
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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.
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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.
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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.
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