Green Roof  

Biodiverse Green Roof, re:centre, Bradford University, UK

Project Information

Client:Bradford University
Contractor:GB Building Solutions / Geogreen
Architect:Farrell and Clark
Landscape Architect:Margaret Twigg Landscape Design
Product:Roofdrain 20, ABG Biodiverse Growing Media, ABG Plug Plants
Quantity:150m2
Benefits:- Significant contributor towards BREEAM rating
- Replace lost habitat & enhance biodiversity
- Complete ABG service from design support to installation.


Project Description

The new build £5.2m re:centre, Bradford University, comprises a four-storey, 2,000m2 building, containing workshops, business units, an open-plan office and a multi-function space, all of which will provide learning facilities and teaching resources aimed at promoting sustainable living. The re:centre has been designed to the University's target driven sustainability specification, delivering the world's highest ever pre-construction BREEAM rating of 94.95% at award. The buildings design showcases several highly sustainable low energy features including a full height sun space providing natural ventilation in the summer and heating in the winter, PV panels, hempcrete walls, rainwater harvesting and a biodiverse roof system.

The Challenge

Given the nature of the project it was important from the outset that the building and it’s construction embraced sustainability from the beginning. It was decided that all usable space, including at roof level, would be used to its maximum potential. It was critical that the Biodiverse system provided the necessary contribution towards achieving this and the associated BREEAM credits. The biodiverse system was required to replace lost habitat (LE04: 2 credits), enhance ecology and increase the number of native or beneficial plant species present on site (LE05: 3 credits). This is relevant to BREEAM primarily within the Land Use and Ecology section, although it does also directly impact other considerations including flood risk mitigation and indirectly in thermal comfort, acoustic performance, responsible sourcing of materials & waste management.

The Solution

ABG worked closely with the landscape architect to create a system to meet the stringent criteria. The green roof installation comprised a wildlife pond planted with native marginal plants, a native wildflower area, matrixes of sedums, grasses and herbs, insect hibernacula’s including bird feeder tables, insect houses, pebble areas and coiled hemp rope, specially designed features to encourage the development of flora and fauna on the roofing area. A lightweight ABG Biodiverse growing media was used to minimise the roof loadings whilst providing a nutritionally rich base for the specially selected vegetation. Beneath this surface finish ABG Roofdrain drainage geocomposite was used to create a free-draining void that also allows for the storage of collected rainwater to irrigate the vegetation during dry periods.

ABG Roofdrain geocomposite biodiverse green roof system
Green roof installation at Bradford UniversityCobbles, logs and a hibernacula’s to encourage insect life as part of ecology enhancement as well as bringing aesthetic benefits
Sedums, grasses & herb plug plants growing on ABG's biodiverse green roofMatrixes of sedums, grasses & herb plug plants
Green roof wildlife pondWildlife pond planted with native marginal plants

The ABG Service

ABG’s in-house technical green roof expertise & on-site installation experience provided the client with a solution that maximised the roofs contribution to the development.

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

Roofdrain

Roofdrain is designed for use in extensive green roof systems. It provides both drainage and attenuation in a convenient, lightweight and cost effective system.

more...

Roofdrain drainage geocomposite for green roofs, blueroofs and roof SuDS attenuation

Biodiverse Roof Systems

Biodiverse roof systems characteristically consist of undulating growing media; typically 80mm – 150mm deep. This is planted with a variety of drought tolerant hardy plants or seed, such as wildflowers, sedums, grasses and perennials.

more...

Biodiverse Green roof System - Brown Roofs from ABG Geosynthetics
 

Products

Roofdrain

Roofdrain is designed for use in extensive green roof systems. It provides both drainage and attenuation in a convenient, lightweight and cost effective system.

more...

Roofdrain drainage geocomposite for green roofs, blueroofs and roof SuDS attenuation

Biodiverse Roof Systems

Biodiverse roof systems characteristically consist of undulating growing media; typically 80mm – 150mm deep. This is planted with a variety of drought tolerant hardy plants or seed, such as wildflowers, sedums, grasses and perennials.

more...

Biodiverse Green roof System - Brown Roofs from ABG Geosynthetics
 

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