The latter tends to be higher in urban areas due to the mass heat absorption from paved roads.
How do white roofs reduce smog.
The drawback of white roofs.
It has long been known that installing white roofs helps reduce heat buildup in cities.
In metropolitan areas white roofs also help reduce smog levels by lowering city temperatures.
A lighter colored roof will reflect as much as 80 percent of the solar radiation that hits your house back into space.
This roof type may not be as eco friendly as meets the eye.
Critics have suggested white roofs do.
The study concludes by stating that the rate of smog formation increases exponentially with temperature and that making the switch to white roofing would reduce smog by 10 percent in urban areas which is the equivalent of removing three to five million cars from the roads.
A white or at least light colored roof provides two benefits.
Known simply as cool roofing this process is designed to reduce the solar radiation.
The first is reduced air conditioning costs which can drop 15 to 20 percent.
A white roof project is low cost easy to implement relieves stress on the power grid cuts down on smog and creates tangible change for individuals our communities and even globally reports the group which is looking to expand its work across the country significantly in 2013 and expand internationally in 2014.
Black roofing is also responsible for heating our waterways.
The second benefit is more cosmic.
But new research indicates that making surfaces more light reflecting can have a significant impact on lowering extreme temperatures not just in cities but in rural areas as well.