A cool roof is either white or is another "cool" color which use darker-colored pigments that are highly reflective in the near infrared portion of the solar spectrum. It is like wearing a light shirt versus a dark shirt out in the sunshine: the light shirt keeps you cooler.
Benefits of a Cool Roof are numerous and 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
Source: Cool Roof Rating Council