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=Types=
=Types=
There are two main types of green roof systems: extensive and intensive.
There are two main types of green roof systems: extensive and intensive.
#Extensive green roofs have growing medium depths of 10 cm to 15 cm (0.1 m to 0.15 m), maximum structural weight loads of 250 kg/m<sup>2</sup>, and vegetation is primarily limited to [[Green roofs: Planting|sedum ''spp'' or commonly known as stone crop]].
#Extensive green roofs have growing medium depths of 10 cm to 15 cm (0.1 m to 0.15 m), maximum structural weight loads of 250 kg/m<sup>2</sup>, and vegetation is primarily limited to sedum ''spp'' or commonly known as stone crop. For information on plants that are often included in green roofs, see [Green roofs: Planting].
#Intensive green roofs have growing medium depths greater than 15 cm (0.15 m), no maximum structural weight load. Intensive green roofs can be planted with deeply rooted plants, making them suitable for various native flowers, trees and shrubs. Pedestrian pathways and gathering areas can also be incorporated into the design of intensive green roofs.
#Intensive green roofs have growing medium depths greater than 15 cm (0.15 m), no maximum structural weight load. Intensive green roofs can be planted with deeply rooted plants, making them suitable for various native flowers, trees and shrubs. Pedestrian pathways and gathering areas can also be incorporated into the design of intensive green roofs.