Cool Roof Rating Council

The Cool Roof Rating Council (CRRC) was established in 1998 as a nonprofit organization to develop “fair, accurate and credible” methodology for evaluating and labeling of all types of roofing products. Their certification program was launched in August of 2002 and modeled after the National Fenestration Rating Council program. The CRRC does not establish criteria or definitions of “cool” but instead has an ANSI approved standard certification program for testing of products by accredited independent testing laboratories.

Initial and aged solar reflectance and thermal emittance properties are tested and recorded on the CRRC directory of roofing products. A CRRC label displaying initial and aged solar reflectance and thermal emittance can be displayed on packaging materials. The CRRC logos can also be used for marketing purposes.

The aging protocol for solar reflectance and thermal emittance involves exposing test panels at commercial weathering farms in three specific locations in the country. After three years of weathering the panels are tested in the unwashed condition..

The importance of having a product listed by the CRRC is that California’s Building Energy Efficiency Standard, Part 6, Title 24, refers to the CRRC as the sole authoritative entity at this time for rated roofing product information. In Title 24, products used in California must be chosen from the CRRC directory, or suffer significantly low default solar reflectance and thermal emittance values in the Title 24 energy calculations.

The CRRC adopted a Color Family Concept proposed to them by the Cool Metal Roofing Coalition. In the Cool Family program, representative products from 17 distinct color families are tested for solar reflectance and thermal emittance using the normal CRRC standard. Other products from within each of the color families, based on their L,a,b values, can then be listed in the CRRC directory using a default value for the initial solar reflectance or the actual measured value, whichever is lower, for that color. The color products also use the aged solar reflectance and thermal emittance values of the representative product for that color family. This procedure foregoes the cost and time of weathering the products within a color family for aged values.

The CRRC is referred to in the LEED program, and the data from the CRRC directory can be used for registering ENERGY STAR roofing products as well. CRRC is pursuing becoming a Certification Body in the revised ENERGY STAR program. They are also working to become a referenced resource in other energy codes and standards.​ 
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