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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
Sargfabric Vienna Austria, intensive green roof
Allen & Overy London, semi intensive green roof
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