Topic 2 Summarized benefits

Environmental benefits

Increasing biodiversity

Reducing the effect of Urban Heat Island (UHI)*

Decreasing the thermal temperature of buildings

Decrease the atmospheric pollution and Greenhouse Gas (GHG) emissions

Rainwater management

CO2 reduction

Creation of habitats for animals (insects, birds)

Social benefits

Aesthetic benefits

Positive impact to human health, psychology and wellbeing

Crime reduction

Access to green areas by all citizens

Sustainability of urban spaces

Liveability in cities

Room creation for recreational and rest purposes

Plants reduced stress and lower obesity percentages achieved by proximity to green areas

Upgrade of productivity and creativity

Economic benefits

Energy efficiency: reducing maintenance and operational costs (the costs for extensive green roofs are lower compared to traditional flat roofs)

Long roof lifespan extension and maintenance saving. An average lifecycle of a green roof is 40-55 years. Protection of green roofs in a longer material require decreased maintenance and savings in replacement costs.

Tax incentives

Green roofs are likely to be a positive selling point for developers

Reduction of emission from power generation

All the above benefits of green roofs are also divided in: