Advances in Development of Cool Roof Coatings
presented by Hashem Akbari, Concordia University
Wednesday, May 21, 3:45 PM - 4:15 PM
Hall of Mirrors
Session: Reflective Roof Coatings and Systems

Cool roofing materials save cooling electricity energy and peak demand, improve indoor and outdoor environment, mitigate urban heat islands, and help to counter global warming. Traditional cool roofing materials include white and light-colored surfaces. Cool-colored roofing materials have been introduced to the market and are available for all roofs including tiles, metals, and fiberglass asphalt shingles. A new generation of cool roofing materials, directional reflective materials (DRMs), are finding their way to the market. DRMs are designed to reflect solar energy and appear dark from street. This lecture provides an overview of these technologies and methods for measuring and labeling their performance.

Learning Objectives:

  • Understand the basics of cool roofing materials.
  • Understand the energy and peak demand savings of cool materials.
  • Understand the capability of cool urban surface to mitigate urban heat islands, reducing urban smog, and countering global warming.

  • Speaker Bio:

    Dr. Hashem Akbari is a Professor at Concordia University (Montreal, Canada). Prior to joining the Concordia University he was the leader of the Heat Island Group, Senior Scientist, and principal investigator in the Environmental Energy Technologies Division at LBNL. He has obtained his Ph.D. in engineering from the University of California, Berkeley. As the leader of the Heat Island Group, he has been instrumental in the organization and initiation of the group at LBNL, funded by the U.S. Department of Energy, Environmental Protection Agency, California Energy Commission, and several other sources.

    He has led LBNL's efforts to investigate the energy conservation potential and environmental impacts of increased tree planting and modifications of surface albedo. His research has identified the attributes of these energy efficiency strategies to mitigating the urban heat island effect. Dr. Akbari is the author of more than 200 articles and coauthor of four books, and chief editor and editor of several scientific journals. He is the founding organizer of CRRC and ex-officio member of its Board of Directors; and an active member of ASHRAE, ASTM, and ASME. He is currently coordinating the “100 Cool Cities” initiative to cool urban heat islands and counter global warming.