What Fire Rating Do I Need?
It comes down to two things: where the glass is going, and whether it has to hold back heat as well as flame and smoke. A fire door vision panel is usually E30. A partition where people work close by is usually EI. Use the finder below to match your application to the right classification, from E30 up to EI120, with the spec and a quote ready to go.
How the finder works
Pick where the glass is going, a fire door, a partition, a compartment wall, and the tool lands on the rating typically specified there. Adjust it, see what each rating means in plain English, then print a spec sheet or get a quote with the details filled in. Built for contractors, specifiers and facilities teams who need to get oriented fast.
E, EW and EI in short
Fire-rated glass is classified under BS EN 13501-2. E holds back flame, smoke and hot gases. EW does that and limits radiated heat. EI does both and also limits heat transfer, so people can stand right beside it. The number is the minutes of protection. For the full explainer, read
glass fire ratings explained. There is also a guide to the
different types of fire-resistant glass.
It is the system that is rated, not just the glass
A fire rating applies to the complete tested glazing system, the glass, frame, beads and seals together. So the right glass is only part of the answer. Our team confirms the full certified build for your project. Every TG FR panel is Kitemark-approved and certified to BS EN 1364-1:2015, with a Declaration of Performance for each build-up.
Get the right fire glass
Once you know the rating, see the
fire-rated glass product page, or get a quote and our team will confirm the build. Specifying for fire doors? Start with our guide to
UK fire door glass regulations.
Frequently asked questions
What fire rating do I need for a fire door?
A fire door vision panel is usually E30, but the right rating depends on the building's fire strategy. Use the finder above to get oriented, then confirm with our team or your fire engineer.
What is the difference between E and EI fire glass?
E holds back flame, smoke and hot gases. EI does that and also limits heat transfer, so people can stand right beside it. The number is the minutes of protection.
Is it the glass that is fire rated, or the whole unit?
The whole system. A fire rating applies to the tested build of glass, frame, beads and seals together, so the glass is only part of the answer.
What standard is fire-rated glass tested to?
ToughGlaze fire glass is tested to BS EN 1364-1:2015 and classified under BS EN 13501-2, with a Declaration of Performance for each build.
