Details of the job
Place : Falmouth
Architect : Grainge Architects, Exeter
General Contractor : University College Falmouth
Construction company : Leadbitter Construction / Progressive Systems
Surface : 3,000m²
A 3,000m2 green roof was required for the roof of the new £7m photography centre and digital animation studio at CUC Tremough Campus. Exeter based Grainge Architects was briefed to specify a roof for biodiversity.
Given the close proximity to the sea, planting had to be suitable to withstand the combined threats of wind uplift and salt damage, in what is clearly a demanding environment. The decision was also made to use certain indigenous plant species, so the seed mix had to be adjusted accordingly.
Roofing contractor, Progressive Systems: Industrial Roofing and Cladding Systems worked closely with Soprema UK to provide a lasting green roof solution in conjunction with an appropriate initial fertilisation and subsequent maintenance schedule. The OPTIGREEN Nature Roof system was chosen for its varied planting of 27 meadow flower and seven grass varieties. Dry seeding was recommended, with suitable adjustment of Seed Mix Type E to accommodate the required indigenous species. The concrete deck was primed and FLAGON TPO EP/PR membrane used to provide a product with a BREEAM Rating. The Flagon vapour barrier was PVCL bonded to the concrete deck. Tapered insulation was laid loose and the Flagon EP/PR membrane laid and ballasted with the Optigreen Nature Roof System.
Advantages at a Glance
A positive environmental impact with dense planting of low growing varieties, which flower annually.
All parties were highly delighted with the ecological qualities of the roof. Grainge Architects’ Tony Pollintine commented, ‘The living roof covers a building within which are a digital media centre, lecture theatres, laboratories and college administration areas. Recognition of environmental responsibilities was a key factor in the specification of a living roof and the first year flowering of the roof has proved highly successful.’ Other Flag materials have also been specified by CUC over several phases of development.