Making Roofs White

White roofs aka cool roofs are a hot topic these days as a means to help stem global warming.

Making roofs white.

New york for instance introduced rules on white roofs into its building codes as long ago as 2012. 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. New research shows that white roofs may actually add to global warming. First find a good paint.

While white reflects the most visible light coloured roofs can also be made cooler by coating with materials designed to reflect light in the infrared spectrum which also contributes to how hot a. Installing white roofs or painting them white has been promoted as a way to help slow global warming. So in other words installing a roof that is white or reflective helps save energy and money. Most of us know better than to wear black on a hot day but when it comes to the roofs on our.

If however you have a slanted roof or have never worked on a rooftop before you may want to consider contracting the help of a professional painter. 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. But is the hype about cool roofs legitimate. But white roofs by reducing the amount of solar heating at the surface also decrease the temperature difference between the surface and the air about a half mile to a mile up from the surface.

Rainwater that falls on a white roof however absorbs no heat. Known simply as cool roofing this process is designed to reduce the solar radiation. Painting roofs white has been like changing lightbulbs one of the well cited easy ways out of climate change. In 2017 more than 3 000 city rooftops were painted using both white lime and a special reflective coating.

Painting your roof white can be as easy as painting any surface. Volunteers have taken white paint to nearly 7 million square feet of tar roofs in the city though that is still only about 1 percent of the potential roof area.