Skip to main content

A roof can be described as the uppermost covering of a building which protects the structure from weather and, in particular, water ingress from rain. A basement requires waterproofing in a similar way to the roof and can, in fact, comprise a roof where it projects beyond the main building line beneath ground level.  Consequently, basement leak detection particularly attention to detailing of the waterproofing is as critical as elsewhere in the building. If this fails and results in leaks, locating the source can be difficult, but at Thornton Consulting we have decades of experience in identifying such issues.

We have recently undertaken roof leak detection at a building comprised of office & retail units in central London, for our client, a large Property Management Company.  Following renovations approximately 10 years ago, leaks had been evident in the basement, the area above forming a car park and loading bay.  Our full leak detection service was required as numerous leaks had been ongoing for some time despite attempts, by others, to resolve the issues.  Our experienced team undertook a combination of tests, including electronic leak detection of the waterproofing membrane where exposed.

There was only partial evidence of waterproofing to the car park, however, as much of it had been covered with rolled asphalt, therefore the integrity and detailing of the waterproofing beneath was unknown.  Localised simulated rainfall tests were, therefore, required to locate the source and trace dyes were used, where necessary, to confirm findings.  Simulated rainfall tests have many uses in building and roof leak detection and are often combined with other tests methods to positively confirm the source of an issue by recreating the internal leak through a methodical and controlled approach.

The tests described above indicated areas of water ingress around concrete columns, indicating an issue with the waterproofing in these areas.  This was later confirmed by exposing small areas of the substrate and waterproofing, revealing clear issues with the integrity of the membrane.  Such tests can be invaluable in pinpointing the source of the leak to a small, localised area and minimize the remedial works required to resolve it, avoid unnecessary disruption to occupants and resolve the leak in an efficient manner.

If you are experiencing similar leaks into a basement or have water ingress issues into any part of the building, we would be happy to help resolve these for you. To find out more about our basement leak detection services, please contact our office on 01342 410508, or visit our website