On February 12, CoolSeal’s Maria Koetter hosted "Beating the Heat: ASU’s Cool Pavement Study, Year 2 Results" as part of the Cool Communities, Healthy People Webinar Series. This session featured Ryan Stevens and Dr. Jennifer Vanos, who shared the latest findings from ASU’s Cool Pavement Study and their implications for the future of urban development in Phoenix, Arizona.
In 2022, the City of Phoenix and ASU researchers continued their Cool Pavement Pilot Program, testing CoolSeal 2.0 in "Phoenix Gray", a heat-reflective coating by GuardTop®. Building on 2020 findings, this phase confirmed that CoolSeal lowers street and air temperatures but may increase midday heat reflection, making it feel warmer for pedestrians. The study also found that CoolSeal reflects less UV radiation, potentially reducing exposure.
Key Findings from the Study:
Moving forward, Phoenix is tackling rising temperatures with a mix of cool pavement, shade, and heat resilience efforts like the following:
Watch the full webinar here:
Download the webinar slides here:
Ryan Stevens Presentation Slides
Dr. Jennifer Vanos Presentation Slides
Learn more about our experts

Ryan Stevens
Stevens is a Civil Engineer for Phoenix’s Street Transportation Department, managing the city’s $200M pavement programs, including the Cool Pavement Pilot. He shared Phoenix’s plans for cool pavement initiatives and outlined the city’s next steps in addressing heat mitigation.

Dr. Jennifer Vanos
Dr. Jennifer Vanos is an associate professor in ASU’s School of Sustainability, specializing in climate change, extreme heat, and human health. She led the City of Phoenix Cool Pavement Pilot Projects in 2020 and 2022. Dr. Vanos broke down key findings from the ASU Cool Pavement Study Phase II and discussed how CoolSeal is reducing urban heat islands and enhancing community health.