Painting Roof White Make The Attic Cooler

The conditions would of course be very different in california to those found in.

Painting roof white make the attic cooler.

But its potential value in ameliorating the most severe consequences of excess heat in cities could be life saving. 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. How to cool your roof. 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. The easiest route is to slap a cool roof coating onto an existing roof. 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. Reduced heat load equates to reduced energy required to cool or heat a building.

Lo mit is a silver colored non thickness dependent low emissivity radiant barrier paint interior radiation control coating system irccs which may be used in almost any application where infrared heat reflectivity. It found that a clean white roof that reflects 80 of sunlight will stay about 31c cooler on a summer afternoon. That equates to a 16 7 reduction on the heat load being transferred from the the roof system into the attic. 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.

The urban heat island can be a killer.