Toronto mandates green roofs

August 11, 2010

Toronto now requires up to 50% green roof coverage on multi-unit residential dwellings over six stories, schools, nonprofit  housing, and commercial and industrial buildings.


The city of Toronto late last month passed a new green roof by-law that consists of a green roof construction standard and a mandatory requirement for green roofs on all classes of new buildings. The by-law requires up to 50% green roof coverage on multi-unit residential dwellings over six stories, schools, nonprofit housing, and commercial and industrial buildings. Larger residential projects require greater green roof coverage, ranging anywhere from 20–50% of the roof area.




"The City of Toronto's leadership on all things green took another major step by making it obligatory to have green roofs for all types of new buildings," said Deputy Mayor Joe Pantalone, the primary champion of the new by-law. "This by-law is a major part of the solution to climate change, the creation of green jobs, and it represents a whole new mindset on how our cities approach the 20% or so of surface area that are roofs."

Chicago has the greatest number of installed green roofs, according to the Green Roofs for Healthy Cities' Annual Green Roof Industry Survey released last month. The mandatory by-law in Toronto may change that, resulting in approximately 50 to 75 new projects annually, according to GRHC president Steven W. Peck.

Toronto already requires green roofs on city-owned properties, has established a financial incentive of up to $5 per square foot for existing buildings, and is currently building a publicly accessible green roof on its city hall.

For more on the green roof by-law, visit: www.toronto.ca/building.

Source: Green Roofs for Healthy Cities' Fourth Annual Industry Survey
Chicago 534,507
Washington, D.C. 501,042
New York 358,986
Vancouver 320,000
Philadelphia 196,820
Baltimore 150,032
Montreal 75,700
Grand Rapids, Mich. 74,784
Princeton, N.J. 56,250
Newtown Square, Pa. 48,130

         
 

Comments on: "Toronto mandates green roofs "

Comments

The green roof is a roof of a

The green roof is a roof of a building that is partially or completely covered, and growing medium, planted over the waterproofing membrane. Urban environmental considerations have long been touted as a simple and effective strategy for beautifying the built environment and increasing investment opportunities.

Very nice information. Thanks

Very nice information. Thanks for sharing.

Spray Foam Roofing

Spray Foam Roofing Systems provide many benefits to building owners. The two most important benefits is the value of the seal and leak prevention and insulation.