Study: Green roofs suck at solving global warming

Watts Up With That?

White roofs three times as effective as green roofs

From Lawrence Berkeley National Laboratory and some members of the BEST team comes this surprise.

“We conclude that the choice of white vs. extensive green roof should be based on the environmental and societal concerns of the decision-maker. If global warming is a major concern, white roofs, which are around three times as effective at cooling the globe as green roofs, will be the preferred choice. On the other hand if the local environment is a primary interest, green roofs will be preferred. Of course, stormwater management may be a decisive factor in favor of green roofs, particularly in the presence of strict local stormwater regulations.”

The paper:

View original post 320 more words

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