Glass can look open and modern while still providing fire separation, but not every “fireproof” glass is the same. Fire-rated glazing is tested as part of a complete door or window assembly. This guide explains the standards, ratings, and specification steps for commercial projects.
Fire-protective vs fire-resistive glass
Common standards and ratings
| Standard | Region | Typical rating |
|---|---|---|
| UL 10B / UL 10C | North America | 20-180 minutes |
| BS 476 | United Kingdom | 30-120 minutes |
| EN 1634 | Europe | EI 30 to EI 120 |
| ASTM E119 | North America | 60-180 minutes |
Buying checklist for fire-rated glass assemblies
- Confirm which standard your local code and authority require
- Define the maximum opening size and glazing type
- Check whether the frame, hinges, and glass are tested together
- Confirm the hardware and closer are part of the rated assembly
- Request the test report and product label details
FAQ
Can I use ordinary tempered glass in a fire-rated door?
No. Tempered glass can break under fire conditions. Fire-rated glazing must be tested to the required standard and installed in a certified frame.
What does EI 60 mean on a fire-rated window?
EI 60 means the assembly maintains integrity (E) and insulation (I) for 60 minutes under the European EN test method. Integrity alone, without insulation, is a lower performance class.
Do fire-rated glass doors need special hardware?
Yes. Self-closing devices, positive latching, intumescent seals, and fire-rated hinges are usually part of the tested assembly. Changing hardware can invalidate the rating.
Send your opening schedule to Yesoon Door for certified fire-rated door and window assemblies. Start with our complete fire rated door buyer’s guide.
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