Green roofs are an example of a “green technology” for sustainable architecture. They are built on top of existing roofs or as stand-alone structures and intended to do at least one of the following:
Increase biodiversity
Help purify the air
Help insulate the building while reducing the amount of energy required for heating and cooling
Filter pollutants from rainwater before it enters the water supply and improve water quality
Alleviate urban heat island effect and CO2 level
Provide buildings with insulation
Decrease building energy use
Green roofs also help mitigate stormwater runoff and can be used for water retention and purification, carbon sequestration, fire safety restoration, aesthetic pleasure, and even recreation. It’s no wonder many business owners opt for a green roof when installing a new commercial roof.