Semi Intensive Green Roof Detail

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 detail.

With more depth of growing substrate 100 200 mm it can support a greater diversity of plants but not shrubs and trees. Extensive intensive semi intensive. Semi intensive green roofs are low maintenance. Plants succulent ground covers and water conserving accent plants.

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. In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs. Roof protection moisture retention.

Module size 2 ft x 2 ft x 6 in. A semi extensive green roof sits somewhere in between the two main options and is based on the extensive roof principles. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used. Weight approximately 39 to 44 lb sf fully vegetative at maximum water holding capacity.