Water Sensitive SA

Green roofs

What is a green roof?

A green roof is a vegetated landscape system installed on a roof structure or building structure. Green roofs are made up of a series of layers; waterproofing layer, drainage layer, filter fabric layer, growing substrate layer and vegetation layer.

Green roof - construction system. Source: Fifth Creek Studio
Types of green roofs

There are three main categories for green roofs: Extensive, intensive and elevated landscape/on structure.

This lightweight system has a substrate depth of 150mm or less, and typically non-trafficable access due to thin substrate and structural capacity.

This is the most common type of green roof, with a substrate more than 150mm and usually less than 550mm. These roofs are trafficable and often include paving, insulation and have good stormwater management opportunities.

Elevated landscape/on structure

These landscapes have a substrate of 500mm or greater and create a new ground plane or surface. This gives the greatest potential for insulation, stormwater management and biodiversity, similar to existing ground surface.


Coming soon - narrow

Standard drawings

Acknowledgement of Country

Water Sensitive SA acknowledges Aboriginal people as the First Peoples and Nations of the lands and waters we live and work upon, and we pay our respects to their Elders past, present and emerging. We acknowledge and respect the deep spiritual connection and the relationship that Aboriginal and Torres Strait Islander people have to Country.