Green Roof Canopies
Canopy type structures are ideally suited to support green roof systems, with the lower height and uncomplicated build, reducing construction and maintenance costs. Entrance canopies, classroom canopies, covered walkways and outdoor dining structures often have a significant visual impact and a green roof can help the canopy blend in, improving views from surrounding buildings and creating better environments with the introduction of biophilic design.
Green roof structures introduce valuable pockets of diversity with hundreds of plant and wildlife species can be established in a few square metres, reproducing varied ecosystems in areas where the habitat has been eroded by urbanisation.
Extensive green roofs have been found to reduce water run-off by up to 90%, depending on season and the prevailing ambient temperatures. The plants and soil retain a significant proportion of the rainwater, much of which is then released back into the atmosphere gradually through evapotranspiration. Peak flow from green roofs during storm conditions is also reduced as the rainwater filters slowly through the growing media and filter layers, mitigating the pressure on local surface water drainage systems.
There are two types of green roof specified on Streetspace canopy structures and these are sedum only or sedum and wildflower. Both are lightweight systems with a steel decking liner, EPDM membrane liner, composite drainage reservoir mat, the growing substrate and finally the pre-planted mat. The sedum only type used a mineral wool substrate, and a mixed sedum turf while the sedum and wildflower requires a greater depth of growing medium to support the wildflower species.
Green roof specification is well proven on Streetspace canopy design with supporting structure, eaves detail and rainwater systems manufactured to provide a consistent, architectural aesthetic. Timber clad, galvanised or colour powder coated finishes are available.request a quote
Green roof structural design and manufacture in accordance with requirements of BS EN 1090 EXC2 from mild steel section with hot-dip galvanised finish.
Green roof structural deck is constructed from full-length trapezoidal profile steel sheet with double sided zinc and paint finish.
Single sheet EPDM liner which is 100% synthetic and UV resistant with excellent puncture resistance protected by the geotextile membrane.
A geotextile lining sheet preventing any damage to the waterproof liner during installation or establishment phases.
A double-sided drainage and reservoir layer made from recycled plastic, which allows high levels of water retention and buffering in hot weather with rapid drainage in wet periods.
A growing medium made of virgin rock mineral wool fibres specially needled to form a 40mm deep compact and dimensionally stable felt, ensuring excellent water retention and conservation.
A pre-grown vegetation mat specifically designed for green roofs, sown with a blend of sedum plant varieties to provide extended interest and colour throughout the flowering period. Sebaceous sedum plants are adept at storing water in their leaves and are therefore extremely suitable for varying weather conditions.
Formed in galvanised steel sheet with a structural profile to support the membrane system and retain green roof build up. Optional powder coated finish available. Pre-formed gutter profile allows excess water to be released from the composite reservoir.
Crooked Yellow Stonecrop
Coccineum Purple Carpe