Fire-Rated Glass & Glazing Calculator
Determine fire-rated glazing requirements for walls, doors, and transoms based on IBC and NFPA requirements.
Fire-Rated Glass Types
| Glass Type | Max Rating | Temp Rise |
|---|---|---|
| Wired Glass | 45 min | No |
| Ceramic (fire protective) | 3 hours | No |
| Fire-Resistive (gel-filled) | 2 hours | Yes (450F) |
| Intumescent Multi-Lam | 2 hours | Yes (450F) |
Fire-Rated Glazing Classifications
Fire Protective (FP)
Prevents flame and gas passage for the rated time. Does NOT limit radiant heat transfer. Typical: wired glass, ceramic glass. Limited to 100 sq in in doors (1+ hour).
Fire Resistive (FR)
Provides flame protection AND limits temperature rise to 450F. Required for exit enclosures and where large glazing areas are used. Typical: gel-filled, intumescent glass.