Extreme heat plagues Philadelphia, driving high energy consumption, increased public health risk, and exacerbated temperature inequities. The Composto Lab has partnered with the Philadelphia Office of Sustainability to pilot CoolSeal, a reflective asphalt street coating with potential to mitigate heat risk. Through qualitative interviews, competitor analysis, and pilot site measurements, our team outlines CoolSeal's feasibility and performance. CoolSeal shows significant surface temperature reductions, but its high cost may limit widespread adoption. CoolSeal lies within a broader set of extreme heat solutions. For detailed quantitative findings on surface temperature and mean radiant temperature, please reference "Evaluation of Asphalt Coatings’ Impact on Urban Heat in Philadelphia" by Nafisa Bangura and Angelica Dadda.