Sheffield City Council- Sheffield Design and Project Management (Photo courtesy of Cath Basilio - Architect)
Main Contractor
Kier Sheffield
Type of Development
Primary School
Reason for Green Roof
A planning requirement contributing towards reducing surface run-off and intrusive noise from rain and hail.
Type of Roof
Metal Deck
Size of Green Roof
1,684m2
Details of Green Roof Element
40mm vegetation support blanket overlain with 30mm Sedum Mats
Comments
Due to sewage and stormwater overflow problems in the local catchment a condition of the planning permission was to minimise the sites rainwater runoff. Green roofs were chosen for their water holding capacity as an innovative form of sustainable urban drainage design, with excess water runoff from the roof being harvested and utilised to supply the schools toilets. Although only a blanket based roof supporting a thin layer of sedums were installed the roof serves its purpose, reducing intrusive noise from rain and hail which has been a problem from some of the lightweight long-span metal roofs, lowering the likelihood of vandalism, improving thermal insulation, providing evaporative cooling, improving rainwater management from the site and creating a habitat for insects and other wildlife (bees were particularly evident in the first season).
