Fire-rated glass provides the primary fire-stopping function in fire-resistant curtain walls. It is engineered to maintain integrity under thermal load, restricting flame and smoke propagation between fire compartments while preserving visibility for evacuation. Its mechanical strength also allows it to withstand impact during fire events, reducing the risk of breach.
In assembly, the glass must work as a system with fire-rated framing and intumescent seals. The article stresses that specification should be driven by project-specific fire resistance requirements and environmental exposure. Product quality and the fabricator’s qualifications should be verified against applicable national standards.
Installation must ensure intimate contact between glass, framing and seals so the barrier performs as designed. The source also recommends periodic inspection and maintenance of the full curtain-wall assembly to catch seal degradation or frame movement that could compromise the fire barrier.