How Do White Roofs Reduce Smog

There are many small scale initiatives in cities to make roof surfaces more reflective.

How do white roofs reduce smog.

Recently launched by the 3m smog reducing granules nitrogen oxides or nox using roofing shingles. A cool roof transfers less heat to the building below so the building stays cooler and uses less energy for air conditioning. By lowering energy use cool roofs decrease the production of associated air pollution and greenhouse gas emissions. In 2017 more than 3 000 city rooftops were painted using both white lime and a special reflective coating.

Roofs and roads are routinely repaired and replaced and. Black roofing is also responsible for heating our waterways. 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. Cool roofs can reduce air temperatures inside.

How do they work. Reduced air pollution and greenhouse gas emissions. Known simply as cool roofing this process is designed to reduce the solar radiation. We can also evaluate your roof and provide you with a complimentary estimate on the same day.

The study however did not account for how white roofs might reduce electricity use for cooling which could help lower temperatures by reducing emissions from power plants. 1 3 these temperature reduction and. Pro roofing nw can have one of our mobile showrooms stop by so you can see our wide selection of malarkey roofing shingles in kirkland. In urban areas white roofs also help lower smog levels by lowering local temperatures which tend to be higher due to the large proportion of paved surfaces.

New york for instance introduced rules on white roofs into its building codes as long ago as 2012. Lawrence berkeley estimates that installing so called cool roofs and cool pavement and planting trees over 30 percent of the los angeles basin would lower the average outside temperature by five degrees which would in turn reduce smog by 10 percent. Green roof temperatures can be 30 40 f lower than those of conventional roofs and can reduce city wide ambient temperatures by up to 5 f. Improved human health and comfort.

That would reduce la smog as much as a total ban on cars and lorries. Critics have suggested white roofs do.