Extensive Green Roof Layers

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 roof layers.

Simpler shallower cheaper green roofs with limited variety of plants are called extensive green roofs these systems are easy to install require little to no maintenance or irrigation and weigh the. Extensive green roofs are lightweight with a shallow layer of growing substrate of less than 200 mm deep requiring minimal maintenance. Intensive green roofs are comparable to soil bound green areas such as gardens and park landscapes. Examples of extensive green roofs.

Green roofs are also known as vegetative or eco roofs. 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. The vegetation consists of lawns shrubs and trees and can easily be combined with pedestrian and vehicular pavements. By alan burchell rubyana lyon green roof mar 3 2017.

Types of green roofs. Extensive semi intensive and intensive green roofs. Three types of green roofs exist. Extensive green roofs are designed to be low maintenance lightweight systems with no general access.

Each green roof is unique as their designs and performance vary by region climate and building type and use. Typically they have thin layers of substrate the growing medium to keep depth and weight to a minimum. Vegetative roofs also known as green roofs are thin layers of living vegetation installed on top of conventional flat or sloping roofs. In short a green roof is made to purposely grow grass.

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 roofs sedum roof systems. It also has plants and the like on top. They fall into three main categories extensive intensive and semi intensive.

The vegetation for this roof needs a lot of water and regular maintenance. To make this process work various green roof layers are created to give it the most effective and solid chance of being. The bronx county courthouse features a 1 inch drainage layer with a 2 5 3 inch deep growing medium profile the green roof is composed of a mix of sedums and hardy herbs with a sweeping crescent of small grasses. However the difference between green roofs and an actual green roof is that a green roof comes with various layers.

Green roofs have traditionally been categorised as extensive or intensive.