PROJECT OVERVIEW

Sussex Asphalte were entrusted to carry out the renewal of the waterproofing system on the rear terrace of the iconic Brighton Centre, with the goal of restoring the space for functional use and events. The project involved the complete removal of the existing, deteriorating single-ply waterproofing system, including 50mm of original asphalt and 140mm of PIR insulation. A new warm roof system was then installed in accordance with current building regulations. This included a tapered insulation scheme to address the original inadequate drainage, which directed water toward the building. To maximise usability and aesthetics, new promenade tiles were laid, transforming the terrace into a versatile and attractive area. Additional mastic asphalt was applied strategically to enhance falls and ensure effective water runoff. New lead flashings were installed around the perimeter and multiple pillars, adhering to standard roofing practices and contributing to a clean, modern appearance. The completed works have revitalised the terrace, providing a durable and visually appealing space for clients and visitors to enjoy at the Brighton Centre

PROJECT CHALLENGES

The rear balcony of the building had been subject to persistent water ingress over several years, with only temporary repairs implemented to address the issue. To resolve the problem comprehensively, the area was closed during the winter season, allowing Sussex Asphalte sufficient time to carry out the remedial works. However, the 20mm asphalt discovered from the initial core samples at tender stage, quickly became 50mm in most areas. Therefore, the existing build up took 2weeks longer to remove. It was also discovered at this stage that the falls in the terrace were going back toward the building away from the outlet. So a complete re-design of the area was necessary. To compound these issues, once the existing waterproofing was removed, the outlets sat higher than the roof so any area we removed then became flooded with the inclement weather experienced. This gave the existing outlets a good test as to whether they were fully operational. Careful consideration was given to the existing low door thresholds and the disability access when creating new falls, The final result offers improved accessibility and drainage performance, significantly enhancing the functionality and resilience of the terrace.

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