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Growing concern over building emissions and occupant health has led experts to re-evaluate how we insulate and protect our homes. Spray foam insulation, once valued mainly for its high R-value, is now at the center of discussions about sustainability, environmental impact, and indoor air quality. How does spray foam contribute to lower carbon footprints? What innovations are shaping the next generation of energy-efficient and healthy homes? And how can builders balance performance, cost, and environmental responsibility? Mickel Maalouf, Building Science Expert at Huntsman Building Solutions, joins The Hammer to unpack the science and future of spray foam in sustainable construction.