Langley Structures’ flat to pitched roofing system wins product innovation award at UK Roofing Awards 2019

Langley Structures Limited has won the Product Innovation award at the UK Roofing Awards 2019 for its flat to pitched roofing system, which was installed by ENGIE at Block 6 (79-101), Turkey Street. The flat to pitched system was installed at the residential building in Enfield to extend the lifecycle of the roof and provide the end client with a solution that would last, reducing the need for ongoing maintenance and associated additional costs.

Hosted by the NFRC, the UK Roofing Awards aims to recognise and reward high standards of workmanship and safety within the UK roofing industry. Announced on May 10, 2019, the award for Product Innovation was awarded based on criteria such as the complexity of the project, workmanship and health and safety management.

Working in collaboration with ENGIE, Langley Structures’ flat to pitched roofing system was delivered at Block 6 (79-101), Turkey Street, Enfield as part of a larger regeneration scheme that included window replacement, new rainwater goods and facia-soffit. The existing flat roof of the residential building had reached the end of its lifespan. It was therefore decided that Langley Structures’ flat to pitched system be installed to provide the end client with long-term benefits, including reduced maintenance costs and building insurance premiums, less likelihood of intruders on a non-access roof and increased thermal insulation, aesthetic appeal and perceived value by tenants and leaseholders.

David Gatehouse, head of Langley Structures, said: “We are incredibly proud to have won the Product Innovation award at the UK Roofing Awards 2019, in collaboration with ENGIE, for the work on the Turkey Street project. The project itself was complex – the team identified that five brick party wall separations hidden in the building’s roof void had to be extended in order for the party wall to be completed to building regulation standards. Langley Structures, Capital Property & Construction Consultants and ENGIE worked collaboratively to ensure that the project could be completed safely – whilst also overcoming numerous logistical challenges, including limited on-site storage space for materials.”

In order to extend the party walls, ENGIE’s operatives cut back the existing waterproofing and structural deck. The need to prevent water ingress was managed by creating temporary waterproof kerbs around the open area, which were then covered with a temporary seal and lid to facilitate the works. Langley Waterproofing Systems’ synthetic primer and Parevapo SBS ADH self-adhesive flame free membrane was utilised for this purpose, in line with the NFRC Safe2Torch guidelines to avoid potential fire risks. These remedial works extended over an area of approximately 160m2.

Party walls, separating each flat and communal area, were extended upwards with brickwork, to reach the height of the existing flat roof level, creating continuous party walls to meet building regulation standards. The brick extensions were then encased in mineral wool insulation for fire protection and acoustic properties, then capped with metal plates and intumescent fire seal. These preparatory works needed to be carried out before the new pitched roof system could be installed. They required a temporary waterproofing covering as they were exposed to the elements. Once the internal extensions to the party walls were complete the fire separation was continued to the new roof level at party wall locations by independent fire walls.