1) Assist with water management
As it is retaining rainwater for plant consumption, run-off is minimized, which reduces the risk of localized flooding.
2) Improve a building's insulating envelope
The green roof is adding an extra layer of insulation, which boosts the energy efficiency and reduces heating and cooling costs up to 5 percent.
3) Reduce the impact of urbanisation
Plants improve urban air quality by filtering out polluting particles that create smog.
4) Decrease the Urban Heat Island Effect
The widespread use of heat-absorbing materials like concrete and asphalt make cities up to 10 degrees hotter than rural areas. Adding more foliage into metropolitan areas reduces this problem.