15 to 50 per square foot.
Extensive green roof examples.
Green roofs are sprouting up.
Examples of extensive green roofs produced by vegetal i d.
Green roofs can absorb as much as 90 of the rain that falls on them.
The several layers that make up a green roof filter the water and remove pollutants before sending the water to a downspout and eventually back to rivers and streams.
Click through these spectacular examples from san francisco to singapore to discover how top.
The incredible set up of this green roof supports flora ranging from wetland.
Cincinnati civic garden center roof example rain event 12mm from july green roofs and water quantity buffam and mitchell unpublished data most extensive green roofs will reduce stormwater flows on an annual basis by 50 green roofs also delay stormwater runoff but flow dynamics depend on climate and green roof design.
It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants.
8 to 20 per square foot.
Along with the makeup and depth of the growing medium selecting the right plants is crucial to the success of a green roof.
The intensive portion features a 2 10 inch drainage layer and a 2 5 to 8 inch growing media layer exhibits diverse examples of habitats.
The two kinds of green roofs.
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.
Examples of semi intensive green roofs produced by vegetal i d.
The plots are used to conduct extensive research on how different.
Plants for green roofs.
For a conventional roof.
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.
The components of a green roof.
A semi intensive green roof has a thicker layer of growing medium in order to broaden the range of plants but involves more maintenance and irrigation systems are sometimes essential.
A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species.
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.
Examples of extensive green roofs.
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.
The plants chosen must be appropriate for the roof type extensive intensive or semi intensive.
