Flat Roof Constructions
We investigate the different types of flat roof construction
Knowledge Article5 min read
Situated at the heart of the prestigious North Cambridge Research and Design Cluster, the Maurice Wilkes Building from St John’s College and Turnstone Estates meets growing demand for Grade ‘A’ office space within the thriving UK Innovation Corridor. Barber Casanovas Ruffles’ design responds to the requirements of the wider St John’s Innovation Park – that the building be classic, rational and timeless – whilst adding drama with a tented canopy on the façade above the southern entrance.
LOCATIONCambridge, UK
ArchitectBarber Casanovas Ruffles
ProductsThermataper TT47
In order to achieve a BREEAM rating of ‘Very Good’, a number of passive and active measures have been used. To limit heat loss from the expansive flat roof, whilst also ensuring effective drainage, Thermataper TT47 was specified.
The tapered insulation system combines rigid flat packer boards, tapered boards and pre-mitred hip and valley boards. With thermal conductivities as low as 0.24 W/mK, it provided an efficient, lightweight solution for the roof of the Maurice Wilkes building which eliminated the need for a structural fall on the roof.
The application was supported by our specialist tapered roofing service, who used the roof plans from Barber Casanovas Ruffles to develop a detailed tapered roofing scheme. This ensures that the surface will drain effectively and allowed the target U-value of 0.15 W/m2K to be met with a minimal construction depth, helping the project team to meet the requirements of the BREEAM assessment.
Page Reviewed 28/07/25
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