Guidelines for Biodiverse Green Roofs

Green roofs have many environmental benefits. They help reduce the effects of the urban heat island and associated energy use, manage stormwater runoff (reducing the pollutants that enter our waterways), improve air quality and beautify our city. Green roofs also provide an opportunity to create habitat and enhance biodiversity in the urban fabric of the City.

The City of Toronto has a bylaw to require the construction of green roofs on most types of new building development. The City also encourages green roofs through the Eco-Roof incentive program and by providing explanatory tools and resources through the City’s green roof website. All green roofs in Toronto, including those required by the Green Roof Bylaw, are required to meet minimum standards which are defined in the Toronto Green Roof Construction Standard.