PORTLAND, OR, USA — March 31, 2021

The Cool Roof Rating Council (CRRC) announces the release of the 2021 edition of the ANSI/CRRC S100 standard (formerly the CRRC-1 Standard), which received approval from the American National Standards Institute (ANSI) on March 29, 2021. This concludes a two-year (2019-2020) public review process conducted in accordance with ANSI and CRRC requirements for the development of consensus standards.

The revisions to the ANSI/CRRC S100 standard derived from the CRRC, public comments, and ballot comments that were evaluated by the CRRC Consensus Body, a balanced group of stakeholders representing diverse interests.

The ANSI/CRRC S100 standard is an American National Standard that provides a consistent reference in building energy codes and voluntary green building programs—such as the International Energy Conservation Code, ASHRAE 90.1, and the International Green Construction Code—regarding the measurement of the surface radiative properties of roofing materials. The standard covers specimen preparation and test methods for measuring the initial and aged solar reflectance and thermal emittance of roofing materials.

The ANSI/CRRC S100 standard is part of the CRRC’s mission to implement accurate and credible radiative energy performance ratings for roofing products, as well as to provide education and objective support to the public.

The CRRC became an ANSI-Accredited Standards Developer Organization in 2007. After a three-year standards development process, the first edition of the standard was approved on November 16, 2010. The ANS/CRRC S100 standard is currently in its fourth edition and can be accessed for free on the CRRC website.

The CRRC is a 501(c)3 non-profit educational organization formed in 1998 to develop accurate and credible methods for evaluating and labeling the radiative properties of roofing products and to disseminate the information to all interested parties. Please contact the CRRC at [email protected] or (866) 465-2523 for more information on its programs.