Semi Intensive Green Roof Definition

You can get a wider variety of plants suited to the conditions offered by this option.

Semi intensive green roof definition.

Vegetation on green roofs is planted in a growing substrate a specially designed soil substitution medium that may range in depth from 50 mm to more than a metre depending on the weight capacity of the building s roof and the aims of the design. 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. It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants. Semi intensive green roofs are low maintenance.

A typical growing medium depth for a semi intensive green roof is 6 to 12 inches. A semi intensive green roof system typically comprises of items such as protection moisture control and planting systems. 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 semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used.

In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs. 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 variation of the extensive green roof is called semi extensive. The soil will be up to a foot deep and not require irrigation.

A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species. Green roofs are also known as vegetative or eco roofs. Green roofs have traditionally been categorised as extensive or intensive.