Toronto Mayor David Miller kicked off an international meeting for green building with a speech touting the city's recent policy mandating green roofs on new structures, John Lorinc writes. However, Lorinc notes that most of the roofs in the city cover single-family homes and that Toronto's new policy does not encourage homeowners to switch to green roofs. He suggests that the city should create incentives for homeowners to switch to "cool roofing" materials. "They're not sexy, but cool shingles are a low-tech, low-premium, no-fuss solution with a substantial payoff," he writes.
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