Annie White blogging on Mint Life extolls the virtues of painting our roofs white in order to lower both building and planet temperatures.
A few surprising facts:
- It is estimated that simply painting a 1,000 square foot rooftop white could save 10 tons of CO2 emissions annually, thereby slowing global warming.
- If the world’s 100 largest and hottest cities switched to white roofs and light-colored cement pavement, the net environmental effect would be the equivalent of taking all the world’s automobiles off the streets for 11 years.
- The cool roof movement is already gaining momentum in the U.S., with Georgia and Florida offering incentives to homeowners who install white or light-colored roofs. Considering the potential energy and cost savings, California now requires most flat-roofed buildings to be white. As a testament to the potential cash savings, Walmart has installed white roofs on 75% of its stores in the United States.