Rating comparison
Compare fire door ratings: FD30 to FD120
Every UK fire door rating on one axis — 30, 60, 90 or 120 minutes of tested integrity. Pick two to compare, or start with the two most-specified.
FD30, FD60, FD90 and FD120 differ in one thing: how long the doorset resists fire — 30, 60, 90 or 120 minutes of integrity (holding back flame and hot gases) when tested to BS 476-22 or BS EN 1634-1. Higher is not automatically better: the correct rating for any opening comes from the building's fire strategy and risk assessment, not the largest number. None of these is an insulation (EI) rating.
Minutes are the tested resistance duration — integrity (E), holding back flame and hot gases; not insulation (EI). The right rating comes from the building’s fire strategy, not the largest number.
The two most-specified: FD30 vs FD60
Most UK openings come down to the two everyday ratings. The full guide covers where each is required, with the rating dials side by side: FD30 vs FD60: which rating do you need?
Compare any two ratings
FD30 vs FD90
Compare FD30 & FD90 →FD30 vs FD120
Compare FD30 & FD120 →FD60 vs FD90
Compare FD60 & FD90 →FD60 vs FD120
Compare FD60 & FD120 →FD90 vs FD120
Compare FD90 & FD120 →See the full range (FD30–FD120) with the comparison table, or run the compliance checker to find the rating your building requires. Every figure describes integrity (E), not insulation (EI).