Semi Extensive Green Roof

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 extensive green roof.

Typically these roofs will have more soil and some small shrubs as well as the low growing wildflowers and sedums found on an extensive roof. They fall into three main categories extensive intensive and semi intensive. Explore easy to maintain extensive systems or intricate green roofs supporting wide ranging plant life. This system is able to retain more stormwater than an extensive system and provides the potential to host a richer ecology.

In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs. 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. 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 roofs are generally used within highly visible area s to improve aesthetic design using small shrubs forbs and grasses.

The green roof is composed of a mix of sedums and hardy herbs with a sweeping crescent of small grasses. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used. A typical growing medium depth for a semi intensive green roof is 6 to 12 inches. It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants.

A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species. Whatever your green roof entails we can make it viable.