According to the CRRC (Cool Roof Rating Council) a cool roof is:
A cool roof reflects and emits the sun's heat back to the sky instead of transferring it to the building below. "Coolness" is measured by two properties, solar reflectance and thermal emittance. Both properties are measured from 0 to 1 and the higher the value, the "cooler" the roof.
Benefits of cool roofs include:
•Energy savings and global warming mitigation
•Reduction in urban heat island effect and smog
•Improved occupant comfort
•Comply with codes and green building programs
Now that you know the definition of a “cool roof” here is what it means to you. A roof material that reflects heat back to the sky will keep the roof deck at a lower temperature, thus lowering the temperature of the attic and your air-conditioning bill.
If anyone would like to replace an old roof with a quality company that will only use the best material and labor, I recommend Bauer Roofing company. .