Fire-Rated Glass
Glass products that have been tested and certified to provide a specific duration of fire resistance, measured in minutes (20, 45, 60, 90, or 120).
Fire-rated glass is required by building codes in fire separations, exit corridors, stairwells, and areas near property lines. There are two main categories: fire-protective (blocks flames and smoke but allows radiant heat transfer) and fire-resistive (blocks flames, smoke, and radiant heat).
Common products include wired glass (being phased out due to safety concerns), ceramic glass (Pyran, FireLite), and multi-layer intumescent glass (Pilkington Pyrostop, AGC Pyrobel). The Ontario Building Code specifies where each type is required based on the fire separation rating.