Semi Intensive Green Roof Detail

A semi extensive green roof sits somewhere in between the two main options and is based on the extensive roof principles.

Semi intensive green roof detail.

Plants succulent ground covers and water conserving accent plants. With more depth of growing substrate 100 200 mm it can support a greater diversity of plants but not shrubs and trees. This system is able to retain more stormwater than an extensive system and provides the potential to host a richer ecology. Semi intensive green roof a semi intensive green roof system is characterized by small herbaceous plants ground covers grasses and small shrubs requiring moderate maintenance and occasional irrigation.

Semi intensive intermediate depth modules 6 inches. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used. Semi intensive green roofs are low maintenance. Once established they will continue to develop to create a self sustaining plant community on the roof that will also provide habitat for invertebrates and bird species.

A typical growing medium depth for a semi intensive green roof is 6 to 12 inches. Module size 2 ft x 2 ft x 6 in. Weight approximately 39 to 44 lb sf fully vegetative at maximum water holding capacity. Uses intended for designed vegetative green roof applications or functional vegetative green roofs applications where loading is required to combat against wind loads.