Dark roofs make homes 10 degrees warmer, Sweltering Cities project finds

An experiment by Sweltering Cities finds homes in Western Sydney with dark roofs can be as much as 10C warmer in the middle of a hot summer day.NSW Planning Minister Paul Scully says dark roofs are effectively banned on new homes from the end of June.

The study by the Western Sydney Sweltering Cities advocacy group found her indoor temperature climbed as high as 49.8 degrees Celsius when the maximum outdoor temperature was 36.6C. One participant put black tiles on their house because it was $15,000 cheaper to use tiles mass produced for housing estates, compared to the same tiles in a lighter shade."'A modern look', is how he put it," Ms Vernon said.Warmer roofs lead to expensive cooling

"When we're comparing them to nearby homes with light roofs, it was a clear temperature difference," Ms Bacon said.Ms Bacon says a hot roof means cooling a house is much harder. "We'd have a really big impact on the hundreds of thousands of new homes that the New South Wales government is committed to putting in Western Sydney."

"We committed to reforming building thermal and efficiency standards after the previous government backflipped on their own commitment to ban dark roofs.The policy change does not help people like Deborah Clark, however, who will have to change her own roof colour.

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