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.
Vegetation layer green roof.
Examples of semi intensive green roofs produced by vegetal i d.
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.
Some caution is needed in the use of plants with vigorous rhizomes or stolons such as some bamboo species.
This will differ depending on the vegetation planted.
Annual and biennial plants.
A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium planted over a waterproofing membrane it may also include additional layers such as a root barrier and drainage and irrigation systems.
Pebbles can be used to keep the outlets clear.
A range of annual and biennial plants can be used successfully on green roofs and tend to fall into two distinct groups.
In short a green roof is made to purposely grow grass.
It also has plants and the like on top.
Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although.
Examples of extensive green roofs produced by vegetal i d.
To make this process work various green roof layers are created to give it the most effective and solid chance of being.
They fall into three main categories extensive intensive and semi intensive.
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.
Green roofs are also known as vegetative or eco roofs.
For diy green roofs the depth of the substrate is 70 200 mm.
However the difference between green roofs and an actual green roof is that a green roof comes with various layers.
They can become excessively dominant and damage green roof profile layers.