The Triangle, Cambridge Assessment’s new international headquarters, brings together all the company’s Cambridge-based staff under one Alumasc-protected roof.

Designed by HLM/Sidell Gibson Architects, all flat roof areas utilise Alumasc Roofing Systems’ Hydrotech Hot Melt and Alumasc XPS insulation, offering a total system solution. All upper main roof areas drain onto 3 x single storey podiums that have the patented, single source Alumasc BluRoof Drainage System, along with Blackdown Green Roof to provide a habitable space for people to enjoy.

Alumasc’s BluRoof system reduces and controls the peak rate of storm water discharge from roof areas. Detention of storm water up to a prescribed maximum hydraulic head occurs, with subsequent discharge controlled over an elongated time period.

The BluRoof drainage strategies were introduced at design stage to help meet SuDS (Sustainable Drainage Systems) requirements, and Alumasc worked extensively with Capita to achieve the required reduction in rainwater run-off.

Wayne Farrington from Cambridge Flat Roofing, the Alumasc-registered approved contractor which carried out the installation, acting as sub-contractor to Bouygues UK, said “This has been an excellent contract to be involved in, one of our first major BluRoof projects. The level of service and input from Alumasc’s Technical department, both internally and on-site, along with Alumasc’s Customer Services team, have been outstanding.

“Combined with the Hydrotech BluRoof Structural Waterproofing system, a system we have significant trust and experience in installing, we feel we’ve delivered a project we can be proud of. The feedback we’ve received from our client has been extremely positive and we look forward to our next Alumasc BluRoof.”

For further product information about Alumasc’s BluRoof Drainage System click here or call our technical team on 03335 771 500.
Further details about Alumasc’s full range of waterproofing systems can be found at or call the Alumasc technical team on 03335 771 500.
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