This case study is part of a collaborative series between the Canadian Institute for Climate Choices and the Smart Prosperity Institute exploring the value of urban natural infrastructure within the context of climate change and other economic, environmental and societal objectives. Other case studies in the series cover wetlands and urban forests.
Green roofs are being built around the world, but many people do not realize how valuable they will be in addressing the challenges of climate change. Green roofs can help cool the air, absorb excess water, and reduce energy use while supporting biodiversity and making our cities more liveable.
Toronto led the way with its innovative Green Roof bylaw, and there is no reason why others cannot follow. While developers and building owners face barriers to investing in green roofs, governments at all levels can help them to overcome constraints by providing clear direction and incentives.
Also in this series: