Cool Roof Guidelines

Cool roof system as defined by the 2005 California Building Energy Efficiency Standards (also called the California Energy Code). Roofing replacement eligible under this program shall be:

(a) Tested and rated through the Cool Roof Rating Council (CRRC);

(b) Be labeled for its initial reflectance and initial emittance as determined in the CRRC tests and be labeled that the product meets Title 24, Section 118(i);

(c) Meet the Energy Star emittance and reflectance requirements listed in the table shown immediately below:

Specifications:

Low Slope roofs must have: an initial thermal emittance of >= 0.75. an initial solar reflectance of >= 0.65. after 3 years, the solar reflectance must be >= 0.50.

Steep Slope roofs must have: an initial thermal emittance of >= 0.75 an initial solar reflectance of >= 0.25. after 3 years, the solar reflectance must be >= 0.15.

Low-Slope Roofs: Surfaces with a slope of 2:12 inches or less. (As defined in ASTM Standard E 1918-97).

Steep-Slope Roofs: Surfaces with a slope greater than 2:12 inches.

*and. if applied as a liquid coating in the field, be applied at a minimum dry mil thickness of 20 mils* across the entire roof surface and meet performance requirements listed in the table shown immediately below: