Dark Roof Lobby Seeks Rollback of Cool Roof Mandates in Multiple US States

Recent legislative changes in Tennessee, driven by a lobbying campaign from manufacturers of dark roofing materials, have led to the repeal of the state's cool-roof mandate for many commercial buildings, despite widespread scientific evidence supporting the benefits of reflective roofs in reducing energy use and mitigating urban heat. Critics warn that this rollback will increase energy costs and exacerbate heat-related health issues, especially in underserved communities. This pushback against cool roofs aligns with broader efforts by industry groups to challenge energy-efficient building standards, invoking arguments of consumer choice. Research from the University of Tennessee at Chattanooga highlights the urban heat island effect, showing that areas with more tree cover and reflective surfaces can be significantly cooler, underscoring the importance of such measures. Indigenous architectural techniques, as studied in India, also demonstrate effective passive cooling strategies, reducing dependence on energy-intensive air conditioning and associated greenhouse gas emissions. Together, these perspectives emphasize the critical need for sustainable building practices to address rising urban temperatures and climate change impacts.