blueroof

Green Extensive Roof, Huddersfield University, UK

Project Information

Client:Huddersfield University
Contractor:GB Solutions / Geogreen Solutions
Architect:Watson Batty
Product:blueroof Type B, sedum green finish
Quantity3,150m2
Benefits:- SuDS attenuation avoiding underground tanks
- Fast installation
- SuDS process at source in building footprint


Huddersfield University Student Learning and Leisure Centre (SLLC) is a new development built on the University campus in the heart of Huddersfield town centre. The development comprises four new buildings that adjoin each other all constructed using a single steel frame and rising to various heights from two to four storeys with three buildings finished with a green roof. Once completed the £22.5M Centre was topped out in an unconventional ceremony led by Professor Bob Cryan, Vice Chancellor, who planted the final sedum plant on the green finished roof, celebrating the end of the project and the awarding of the accolade University of the Year.

The Challenge

In the original plans three of the buildings were designed with an extensive green roof and the fourth designed with a traditional warm roof. The roof finish contained variety of coloured plants carefully selected to suit the various aspects of the planting areas. The aim was to place a standard green roof which retains water to feed the plants but allowed the majority of the rainfall to run off the roof into the buried SuDS tanks at ground level. Reduction or elimination of these tanks was welcome as these are expensive to build and maintain.

The Solution

Following consultation with ABG Technical Department the roof design was switched to be green roof across all four buildings. Furthermore the original design was amended to allow the roof structure to attenuate rainwater collected from the roof surface, known as ABG blueroof.

The decision to switch to ABG blueroof offered a number of key advantages to the architects. The primary advantage being that utilising the roof construction for the storage allowed the site to meet its SuDS requirements without the need to install underground attenuation tanks, a costly and disruptive operation especially on site with such tight operating conditions. Installing ABG blueroof required only minor detailing changes from the green roofs already specified; these included upgrading the thickness of the drainage layer to meet the storage requirements and the inclusion of restrictor outlet chambers to control the discharge from the roof. The simplicity of the ABG blueroof design meant that the revised roof including the water attenuation capacity was installed within the same time frame as originally scheduled for installing the green roofs saving the client time and money.

The ABG Service

ABG Geosynthetics provided innovative designed alternatives working with the architect, contractor and waterproofing specialist.

ABG blueroof system with green finish and restrictor chamber

ABG blueroof system with green finish and restrictor chamber

Installing green roof boards into the blueroof attenuation systemPlacing the ABG green roof boards showing the overflow holes which then feed into the blueroof attenuation system below
Mature sedum roof overlaying the ABG blueroof attentuation systemMature sedum roof overlaying the ABG blueroof attentuation system
Wildflower growth around the ABG restrictor chamber on this blue roof extensive green roof projectWildflower growth around the ABG restrictor chamber

Contact ABG today to discuss your project specific requirements and discover how ABG past experience innovative products can help on your project.

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Products

Blue Roof Systems

blueroof offers a new concept in the management of storm water. Changing weather patterns means rainfall events have become more extreme challenging the way water is managed. blueroof utilises the roof construction for the attenuation of storm water releasing it at a controlled rate in the period following the storm. 

more...

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