According to Hashem Akbari, an urban heat island effect researcher at Lawrence Berkeley National Laboratories, dark surfaces exposed to the sun can become up to 70 degrees F (40 degrees C) warmer than most white reflective surfaces. In urban areas, the effect of dark roofs and sidewalks that absorb heat can lead to a temperature 1 degree higher than in the surrounding suburban areas.
Roofers have long used light-colored roofs to keep the temperature roofs low and reduce cooling costs during the hot summer months. Cold roofs have now become part of many building codes and rating systems for green buildings. But choosing the right system means understanding exactly how it works, as well as a number of considerations about choosing the right materials.
Metal tiles are the best example of materials able to create a cool roof, because they are naturally reflective. However, there are other roof cover materials, fabricated in light colors that can be used to prevent the absorption of solar heat. In addition, you can also choose to cover your roof with a liquid coating. Many of these products are created precisely to prevent heat absorption and, consequently, to decrease heat transferring inside the building. Be sure to find out all your roofing options at https://www.boulderroof.com/.
