Built by Wates Construction for Doncaster City Council on the site of the former Doncaster College, the five-storey, 157,500 sq ft civic offices will become the council’s new headquarters and a showpiece in the city centre.  As part of the £20 million project, BriggsAmasco was awarded the comprehensive waterproofing contract.

With environmental considerations at the forefront of this challenging design, the roofing system had to provide more than just traditional protection from rainwater. The architects specified the durable and self-healing monolithic waterproofing membrane Hydrotech Monolithic MM6125 which proved ideal for a development with such complex roof details.

When complete, the new building will have strong ‘green’ credentials as it features the latest environmentally friendly and sustainable technologies such as natural ventilation and roof top planting for rainwater harvesting.  A significant roofing aspect is the sustainable sedum roof with wildflower planting which covers the whole of the perimeter areas and the utility building.  These features will make the low carbon offices highly efficient with low running costs.

Ensuring the project was completed to the highest standards and helping the building to achieve its BREEAM rating of ‘Excellent’, BriggsAmasco’s highly skilled team delivered the detailed programme with consistent quality.  As part of the design, a large number of plinths were required to construct the atrium with the louvre screen supports being a particular challenge.  The use of permanently shuttered pitch pockets contributed to the successful installation eliminating vulnerable multi-cornered flashing details.

Other notable elements delivered to BriggsAmasco’s exacting standards were the louvre screens to the central plant area as well as weatherproofing of steel ‘I’ beam stanchions to concrete plinths which was achieved with a combination of the pitch pocket, Vertical Roofmate LG-A and a bespoke metal capping which provided a watertight and aesthetically pleasing result.

Set to open in the autumn of 2012, the new roofing system will provide the Civic Centre with outstanding resistance to weathering and excellent flexibility – playing a significant part in the dramatic development of Doncaster’s Civic and Cultural Quarter.