Can You Save Money by Painting Your Roof White?
It's the big topic, the idea du jour. Supposedly, painting your roof white has many benefits. Because the color white reflects heat, less heat is absorbed by the house. Thus, lower energy bills.
Not only that, you get to save the planet. Steven Chu, the U.S. Secretary of Energy and a Nobel prize-winning scientist, has said that painting roofs white or another light color would help to reduce global warming by reflecting sunlight back into space–it would be like removing every vehicle from the planet for 11 years.
The thing that no one discusses is how to paint your roof. Other than in commercial applications, few people have actually gone out and painted their roof.
Types That Can Be Painted
First, let's assume that you have a composite or asphalt shingle roof. It is estimated that upwards of 80% to 90% of homes in North America have composite roofs. The number is flexible, depending on whether you ask a roofing trade group or an objective observer. But I would say that the number sounds pretty accurate. Just look out your window if you don't believe me. Read more...