Whitest White Paint
Painting rooftops with a new type of super-reflective white paint could help reduce the effects of global heating in buildings and curb the need for air conditioning.
Researchers at Purdue University say the paint they made with barium sulphate pigment rather than conventional titanium dioxide does not absorb any UV light and reflects 98% of all sunlight.
Roofs have been painted white for centuries, but traditional paint reflects only about 80-90% of sunlight and still absorbs the warming UV light. While further tests for durability are needed, the developers say the super-white paint could be on the market within two years at a price comparable to conventional products.
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