An extensive green roof is characterised by its low weight a thin layer of growing medium green substrate a mix of plants adapted to conditions on the roof minimum maintenance and low installation costs.
Green roof layers.
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.
The layers of a green roof are as follows from top to bottom.
Bauder sdf drainage layer.
The basic anatomy of a green roof consists of vegetation growing medium filter membrane drainage layer waterproof root repellant layer roofing membrane support for plantings above thermal insulation vapor control layer and structural roof support.
Drainage protection filtration layer it is used for lightweight green roofs terraces and has many functions.
It is made of a filtration veil and the polyamide monofilament fibre network layer.
In short a green roof is made to purposely grow grass.
Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although.
To make this process work various green roof layers are created to give it the most effective and solid chance of being successful.