Semi Extensive Green Roof

Green roofs are also known as vegetative or eco roofs.

Semi extensive green roof.

It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants. Semi intensive roofs are generally used within highly visible area s to improve aesthetic design using small shrubs forbs and grasses. A green roof is a layer of vegetation planted over a waterproofing system that is installed on top of a flat or slightly sloped roof. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used.

A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species. The planting medium in extensive green roofs ranges from 1 6 to 6 inches deep and while deeper systems have been installed they are not favored as much as the shallower systems drought tolerant sedums succulent plants and grasses are the typical plants used since they are shallow rooted and use little water plant diversity on these roofs is kept low to simplify care and to be sure all plants have similar moisture requirements. This system is able to retain more stormwater than an extensive system and provides the potential to host a richer ecology. The green roof is composed of a mix of sedums and hardy herbs with a sweeping crescent of small grasses.

A typical growing medium depth for a semi intensive green roof is 6 to 12 inches. Semi intensive green roofs our semi intensive green roof systems include a richer deeper substrate and drainage solution compared to extensive roofs enabling use of a wider range of complex plant mixtures. Explore easy to maintain extensive systems or intricate green roofs supporting wide ranging plant life. They fall into three main categories extensive intensive and semi intensive.

In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs. Despite the 10 story elevation and center city location the green roof has attracted a variety of wildlife over the years.