Introduction - Types of Green Roof

Green roofs are intentionally vegetated roof surfaces

They are generally categorized into three groups:

Intensive, semi-intensive [or semi-extensive] and extensive.


Radisson Hotel, Extensive green/brown roof	Intensive - Sargfabric Vienna Austria	Semi-intensive - Allen & Overy London

We have also provided a detailed page on domestic green roofs to help people who want to do something for themselves on their own property.

Table: General Features of the Green Roof Types
	Extensive	Semi intensive	Intensive
Use	Ecological Landscape	Garden/Ecological Landscape	Garden/Park
Type of vegetation	Moss-Herbs-Grasses	Grass-Herbs-Shrubs	Lawn/Perennials, Shrubs, Trees
Benefit	W,T,B	W,T,B,A	W,T,B,A
Depth of Substrate	60-200mm	120-250mm	150-400mm
Weight	60-150 kg/m2	120-200 kg/m2	180-500 kg/m2
Cost	Low	Periodic	High