ANSI/CRRC S100 Standard
CRRC American National Standards Development
Last page update: December 9, 2024
The current edition of ANSI/CRRC S100 - “Standard Test Methods for Determining Radiative Properties of Materials” was approved by the American National Standards Institute (ANSI) on December 5, 2024. The standard covers test specimen preparation and test methods for measuring the initial and aged radiative properties of roofing and exterior wall products. The standard is referenced by building codes and rating programs worldwide in order to measure the initial and aged solar reflectance and thermal emittance of roofing and exterior wall materials.
ANSI/CRRC S100 Standard (2025)
The ANSI/CRRC S100 (CRRC S100) standard was revised in accordance with CRRC and ANSI requirements. The CRRC Consensus Body, a balanced group of 24 individuals spanning three interest categories (Users, Producers, and General Interest), evaluated proposed revisions and comments on the draft standard over a year-long process. After two rounds of public review, the draft standard was approved by the Consensus Body, CRRC Board of Directors, and ANSI in Fall 2024. A timeline of key development milestones is listed below.
Key Milestones
Standards Committee formed by CRRC Board: June 15, 2023
Formation of Consensus Body: October 2023
Consensus Body Balloting to Approve Draft Standard: November 20 – December 20, 2023
First Public Comment Period on Draft Standard: January 5 – February 19, 2024
Consensus Body Recirculation Balloting to Approve Additional Revisions to Draft Standard (#1): May 1 – 15, 2024
Consensus Body Recirculation Balloting to Approve Additional Revisions to Draft Standard (#2): August 8 – 22, 2024
Second Public Comment Period on Approved Additional Revisions to Draft Standard: September 6 – October 21, 2024
CRRC Board of Directors Meeting to Approve Draft Standard: November 14, 2024
ANSI Approval of Draft Standard: December 5, 2024
Publication of CRRC S100-2025 Standard: December 5, 2024
CRRC Consensus Body Roster
| NAME | ORGANIZATION | INTEREST CATEGORY |
| Katherine Berry | American Coatings Association | Producer |
| Chadwick Collins | SPRI | Producer |
| Michael Crewdson | Q-Lab Corporation | User |
| Steve Drennan | Premier Building Envelope Consultants | User |
| Nicolas Emond | ChillSkyn | Producer |
| Mike Ennis | N/A | General Interest |
| Heather Estes | GAF | Producer |
| Rebecca Everman | 3M | Producer |
| Ray Fernando | Kenneth N Edwards Western Coatings Technology Center at California Polytechnic State University, San Luis Obispo | General Interest |
| Seth Jacobson | Climate Resolve | General Interest |
| Michael Joyce, Chair | R&D Services | User |
| Christian Kaltreider | Pacific Northwest National Laboratory | General Interest |
| Frank Klink | N/A | General Interest |
| Nav Koonar | Cedar Shake and Shingle Bureau | Producer |
| Allan Lawrence | IKO Industries Ltd. | Producer |
| Ronnen Levinson | Lawrence Berkeley National Laboratory | General Interest |
| Emily Lorenz | International Institute of Building Enclosure Consultants | User |
Sandra Reed | Gorman Technical Laboratories | User |
| David Roodvoets | DLR Consultants | User |
| Wade Shepherd | Westlake Royal Roofing Solutions | Producer |
| Ginger Shi | Behr Paint Company | Producer |
| Ronald Velichka | Tremco CPG Inc. | Producer |
| Steve Wadding | Polyglass USA Inc. | Producer |
| Howard Wiig | Hawaii State Energy Office | User |
Background
The CRRC became an ANSI-Accredited Standards Developer Organization in 2008. After a three-year standards development process, the first edition of “ANSI/CRRC S100 - Standard Test Methods for Determining Radiative Properties of Materials” (formerly CRRC-1 Standard) was approved on November 16, 2010. The standard is currently in its fifth edition (approved by ANSI on December 5, 2024).
The ANSI Essential Requirements and the CRRC's procedures specify that the process for standards development must be a collaborative, balanced, and consensus-based approval process. As such, every few years the standard must go through a public review process. As part of this process, consensus must be reached by representatives from materially-affected and interested parties. The ANSI/CRRC S100 standard was developed with input from the public and the CRRC Consensus Body, a balanced group representing diverse interests, ensuring that all aspects of the standard are considered.
The ANSI/CRRC S100 standard covers test specimen preparation and test methods for measuring the initial and aged radiative properties of roofing and exterior wall products. The standard is referenced by building codes and rating programs worldwide in order to measure the initial and aged solar reflectance and thermal emittance of roofing and exterior wall materials.
Frequently Asked Questions
The ANSI/CRRC S100 standard (formerly CRRC-1 Standard) is an American National Standard developed through a consensus process in accordance with ANSI and CRRC requirements that provides a consistent reference in energy and building codes regarding the measurement of the surface radiative properties of roofing and exterior wall materials. The standard covers specimen preparation and test methods for measuring the initial and aged solar reflectance and thermal emittance of roofing and exterior wall products.
The American National Standards Institute (ANSI) is a distinguished non-profit organization that coordinates the development of voluntary consensus standards in accordance with the ANSI Essential Requirements, which requires the process for standards development to be fair, open, and balanced.
The CRRC updates the ANSI/CRRC S100 standard approximately every three years. The primary reason for updating the standard is to incorporate changes made to the CRRC's Product Rating Programs that are related to radiative properties measurement, including new test methods and practices adopted by the CRRC since the last update of the ANSI/CRRC S100 standard.
Yes, proposals to update the ANSI/CRRC S100 standard or proposals for the development of a new standard can be submitted at any time. The proposer must use the CRRC Standards Proposal Submission Form. If the CRRC is proposing revisions to the ANSI/CRRC S100 standard, and the proposal is related to those proposed revisions, then the CRRC S100 Public Comment Form (only available during a CRRC public comment period) must be used.
For questions about the ANSI/CRRC S100 standard or the public review process to update the standard, please contact Sarah Schneider, (503) 606-8448 ext. 502.
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