Already, 1.2 million square feet of green space have been added to the city.
In January of 2010, Toronto became the first city in North America to require the installation of green roofs on new commercial, institutional, and multifamily residential developments across the city. Next week, the requirement will expand to apply to new industrial development as well.
Toronto’s requirements are embodied in a municipal bylaw that includes standards for when a green roof is required and what elements are required in the design. Generally speaking, smaller residential and commercial buildings (such as apartment buildings less than six stories tall) are exempt; from there, the larger the building, the larger the vegetated portion of the roof must be. For the largest buildings, 60 percent of available space on the roof must be vegetated.
The industry association Green Roofs for Healthy Cities announced last fall in a press release that Toronto’s green roof requirements had already resulted in more than 1.2 million square feet of new green space planned on commercial, institutional, and multifamily residential developments. According to the association, the benefits will include more than 125 full-time jobs related to the manufacture, design, installation and maintenance of the roofs; reduction of more than 435,000 cubic feet of stormwater each year; and annual energy savings of over 1.5 million KWH for building owners. The longer the program is in effect, the more the benefits will increase...
Via Lauren Moss