Reflective Roofing Makes Measurable Impact On Urban Heat Island

Chelsea Schools called in Territory Manager Rob Verreault from roofing manufacturer Garland, together with architect Mount Vernon Group and SOCOTEC, and gave them a challenge to restore the roofs of Chelsea’s school buildings to a lighter color with a higher solar reflectance. Said Verreault, “We’ve measured reduced temperature readings of the air directly above the roof before, and conceptually knew that should lead to lower air temperatures in the areas around the building on the ground. We were excited to take part in a project with the ambition to fight climate change head-on.” 

After performing a detailed evaluation of each roof, Verreault recommended Garland’s LiquiTec fluid-applied roof restoration system. LiquiTec is certified by the Cool Roof Rating Council (CRRC) with a solar reflectance reading in excess of 0.9. 

Dr. Scammell and the C-HEAT team of researchers were able to measure an immediate impact after the roofs were restored in summer 2021. Their measurements revealed land temperatures approximately 4.5 degrees Fahrenheit lower in the area around the Williams School compared to similar areas in Chelsea where the roof was still black. Said Dr. Scammell, “Fighting the excessive heat in this economically disadvantaged neighborhood is a critical part of revitalization and making it a vibrant home for its 40,000 residents. While UV-reflective roofs won’t solve the entire problem, it’s very encouraging for our work to see this type of immediate impact.” 

Added Verreault, “While addressing the urban heat island is a significant benefit, we also wanted to make sure the roof and building perform as intended for the kids and teachers inside. As a reinforced system, LiquiTec can provide up to 20 years of a leak-free environment with relatively low maintenance. A dry, safe building has better indoor air quality, lasts longer overall, and is more comfortable. We’re proud to partner with the Chelsea community to make sure the Williams School is a haven where children can learn and play, while also doing our part to improve the livability of the entire neighborhood.”