Extensive Green Roof Layers

Extensive green roofs are generally made up of a very thin layer of soil or other planting medium with shallow root plants like sedum mosses and grasses.

Extensive green roof layers.

Green roofs have traditionally been categorised as extensive or intensive. It also has plants and the like on top. However the difference between green roofs and an actual green roof is that a green roof comes with various layers. We have chosen to use the word vegetative rather than the word green in this guide because a non vegetative roof could be considered to be environmentally green without being vegetative.

The vegetation consists of lawns shrubs and trees and can easily be combined with pedestrian and vehicular pavements. Extensive green roofs are designed to be low maintenance lightweight systems with no general access. The soil is usually not more than 5 deep and is sometimes contained by a tray system which provides a barrier to excessive growth protects the roof membrane and also interlocks the. Extensive green roofs are lightweight with a shallow layer of growing substrate of less than 200 mm deep requiring minimal maintenance.

They fall into three main categories extensive intensive and semi intensive. The vegetation for this roof needs a lot of water and regular maintenance. 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. Types of green roofs.

To make this process work various green roof layers are created to give it the most effective and solid chance of being. Three types of green roofs exist. Examples of extensive green roofs. Intensive green roofs are comparable to soil bound green areas such as gardens and park landscapes.

They generally have lower water requirements and use small low growing plant species particularly succulents. In short a green roof is made to purposely grow grass. Green roofs are also known as vegetative or eco roofs. Vegetative roofs also known as green roofs are thin layers of living vegetation installed on top of conventional flat or sloping roofs.

Typically they have thin layers of substrate the growing medium to keep depth and weight to a minimum. By alan burchell rubyana lyon green roof mar 3 2017. Extensive semi intensive and intensive green roofs. Extensive green roofs sedum roof systems.

Each green roof is unique as their designs and performance vary by region climate and building type and use.