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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/m², 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|this list]].

#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/m², and vegetation is primarily limited to sedum ''spp'' or commonly known as stone crop. For information on plants that are often included in extensive green roofs, see [[Green roofs: Planting|this list]].

#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 [[Perennials: List|native flowers]], [[trees]] and [[shrubs]]. Pedestrian pathways and gathering areas can also be incorporated into the design of intensive green roofs.  

Within these two types of green roofs are two installation type systems:

Within these two types of green roofs are two installation type systems: