Low-income favelas would benefit from green roofs but there are two problems: Cost. And a typical design that's too heavy for ...

But with green roofs, less heat is absorbed than with other low-cost roofing materials common in favelas, such as asbestos tiles and corrugated steel sheets, which conduct extreme heat.

Choose from Asphalt Roof Shingles stock illustrations from iStock. Find high-quality royalty-free vector images that you won't find anywhere else. Video Back Videos home Signature collection ... Green ...