What Fire Ratings Apply to Aluminum Window Installations?

Aluminum window assemblies may require fire-resistance ratings depending on occupancy and egress requirements. Common classifications include EW (Integrity plus radiation control up to 200 °C for 30–120 minutes), PF (protection of openings), and SA (smoke control). Certified fire-rated window systems use specialized glazing—fire‐resistant glass panels and ceramic interlayers—and robust frame profiles with fire-resistant insulating compounds. For metal facade panels above or adjacent to fire-rated windows, non-combustible core panels (e.g., mineral wool insulated metal panels) are mandated in many codes. Installation details include firestop strips between window frame and panel, ensuring continuity of the fire barrier. Vertical fire separation lines often coincide with mullions that hold both window and adjoining facade panel spans; these are sealed with intumescent mastic or compressible fire barriers hidden behind trim caps. In interior ceiling applications above escape routes, aluminum ceiling panels over fire-rated windows may require additional plenum dampers or fire curtains. Compliance with UL 10B/10C or EN 1364 standards ensures tested performance. Consulting local codes and certified system datasheets enables proper specification of windows and matching panels for a fully integrated, code-compliant facade and ceiling system.