“Green roofs” become “cool roofs” as Denver council repeals, revises voter-approved law

Read the full story in the Denver Post.

The Denver City Council on Monday night voted unanimously to repeal and replace the “green roof” requirement that voters had established a year earlier.

The original law would have required rooftop vegetation for large buildings, but the council decided to give developers more options for achieving environmental goals.

Under the new law, the city will require “cool roofs” on new and re-roofed buildings of more than 25,000 square feet. Such light-colored, reflective roofs already are popular in Denver. In large numbers, they can lower urban temperatures by several degrees, researchers said.

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