The Heat Pathway Problem: How Energy-Efficient Wall Systems Are Quietly Undermining Fire Containment
Modern building science has made American homes dramatically more energy-efficient—but some of the same design strategies that reduce heat loss through walls may be accelerating fire spread through them. A growing body of research and field evidence suggests that thermal bridging mitigation, a cornerstone of contemporary construction, carries an underappreciated fire safety cost that architects, builders, and code officials are only beginning to reckon with.