What factors affect the fire-performance rating of a structural glazing facade in regulated markets?

Question

Accepted Answer

Fire performance depends on spandrel design, insulation materials, glass type, perimeter fire-stopping systems, and adherence to standards like NFPA 285, EN 13501, or BS 476. While glass itself is non-combustible, structural glazing depends heavily on silicone and framing materials, which must be assessed for fire resistance. Spandrel areas use ceramic-frit glass, fire-rated boards, or mineral wool. Perimeter fire barriers prevent vertical flame spread between floors. In high-rise and commercial buildings, regulators may require fire-rated glazing or protected silicone bonding in critical zones. Proper engineering ensures façade systems meet or exceed required fire-safety classifications.