THE THRESHOLD
Technical insight on steel fire door specification, certification, and the standards transition ahead of 2029 — written for fire engineers, architects, and specifiers. Practical guidance grounded in EN 13501-2 classification, CE marking under ETA-22/0324, and the evidence that stands up at Gateway.
Fire Door Performance Ratings Explained
Integrity, insulation, smoke, acoustic, thermal, security — a steel fire door carries several performance ratings at once. What each one measures and how to read them together.
External vs Internal Steel Fire Doors: What’s the Difference?
Internal and external fire doors look similar but are certified as separate products, against different standards and performance demands.
Understanding EN 13501-2 Fire Classifications
An EN 13501-2 classification is shorthand for a tested, verified performance — but the shorthand only helps if you can read it.
Do All Steel Fire Doors Need CE Marking?
CE marking for steel fire doors explained: what the mark covers under EN 16034, when it applies, how to verify it, and what changes when BS 476-22 is withdrawn in 2029.
How Do I Know If My Steel Fire Door Is Compliant?
A specifier’s checklist for steel fire door compliance: EN 13501-2 classification, CE marking, the Declaration of Performance, ETA field of application, and installation evidence.