Painting Roof White Make The Attic Cooler

The easiest route is to slap a cool roof coating onto an existing roof.

Painting roof white make the attic cooler.

It found that a clean white roof that reflects 80 of sunlight will stay about 31c cooler on a summer afternoon. But its potential value in ameliorating the most severe consequences of excess heat in cities could be life saving. That equates to a 16 7 reduction on the heat load being transferred from the the roof system into the attic. Lo mit attic heat barrier is a coating specially formulated to reduce summer radiant heat gain from the roof into the attic.

Painting roofs white has been like changing lightbulbs one of the well cited easy ways out of climate change. The urban heat island can be a killer. Reduced heat load equates to reduced energy required to cool or heat a building. By decreasing the solar gain and heat retention of your home a white roof also increases its comfort and reduces the heat island effect to which your home s dark roof contributes.

Painting your asphalt shingle roof white can indeed make your roof surface 45 80 f cooler under the hot texas sun and this should easily cut your cooling bills by 10 15. Oleson found that even if every city building roof and stretch of urban pavement in the world were painted white it would only delay global warming by 11 years. But there are problems with this approach mainly finding a paint that will adhere to the asphalt shingles and last for more than a few years. By reflecting more light and heat back to the atmosphere a white roof should act like.

Having a silver roof shouldn t actually contribute to increased heat but a white roof will actually reflect the sun better and help the attic space be a little cooler.