Painting Roof White Make The Attic Cooler

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.

Painting roof white make the attic cooler.

Reduced heat load equates to reduced energy required to cool or heat a building. That equates to a 16 7 reduction on the heat load being transferred from the the roof system into the attic. The easiest route is to slap a cool roof coating onto an existing roof. But its potential value in ameliorating the most severe consequences of excess heat in cities could be life saving.

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. How to cool your roof. The urban heat island can be a killer. By reflecting more light and heat back to the atmosphere a white roof should act like.

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. Lo mit attic heat barrier is a coating specially formulated to reduce summer radiant heat gain from the roof into the attic. It found that a clean white roof that reflects 80 of sunlight will stay about 31c cooler on a summer afternoon. 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 conditions would of course be very different in california to those found in.