Fire door inspections explained: scope, standards, and recording
A fire-resisting doorset is an engineered assembly: leaf, frame, seals, hardware, glazing (if any), and installation details all contribute to the rating in a fire test (for example FD30s or FD60s). On site, maintenance drift is normal — doors are heavily used, adjusted by different trades, and sometimes replaced informally. A dedicated fire door inspection is the structured check that compares what is installed against what the fire strategy and installed product evidence require, and against recognised guidance on tolerances and components.
How inspections fit with the law and guidance
Under the Fire Safety Order (and equivalent regimes), responsible persons must maintain facilities and equipment provided for fire safety. Fire doors protecting escape routes and compartment lines are part of that picture. Industry guidance such as BS 9999, the BM TR024 Code of Practice for fire door assemblies, and manufacturers’ installation and maintenance sheets describe inspection frequencies and fail criteria in practical terms. Inspectors rarely rely on a single paragraph in isolation; instead they triangulate between test evidence, third-party certification labels (where present), the fire strategy, and on-site condition.
Important distinction: A visual inspection cannot prove a door will perform in a fire; it increases confidence that obvious defects that would invalidate the tested design are not present and that ongoing maintenance matches the intended standard.
What a competent inspection usually covers
Scope should be agreed in advance — all doors on escape routes, every rated door in the building, or a phased sample tied to risk. A thorough survey typically examines:
- Certification and identity — labels, plugs, or recorded specification; whether the installed door matches the fire strategy for that opening.
- Gaps — leaf-to-frame and leaf-to-floor gaps within recommended tolerances; consistent closure meeting at pairs of doors.
- Seals — intumescent and smoke seals intact, continuous in the frame or leaf rebate, and compatible with clearance allowances.
- Closers and hold-open devices — correct type, fixing, and adjustment; electro-magnetic holders linked to alarm where required; free-swing arrangements installed only where the design permits.
- Hinges and hardware — correct number, grade, and bearing type; no missing screws; no incompatible substitutions.
- Glazing — beads, seals, and glass appropriate to the fire-resisting specification; no cracked panes.
- Frame and installation — secure fixing, packers where specified, minimal bow or twist that prevents latching, compatible frame-to-wall seals where a cold-smoke rating applies.
- Signage and clearance — correct fire door notices; no permanent storage blocking the door or closer arm.
Recording results
A spreadsheet of “pass/fail” is better than nothing, but weak for audit. Most clients benefit from a numbered doorset register keyed to floor plans, each line capturing location, rating, observed defects, a photograph, recommended remedial action, and a priority. That register becomes the living maintenance record: reopen the same line after works complete to close the loop.
Inspection interval: what is reasonable?
High-traffic doors may need checks every few months; many portfolios adopt at least annual inspection with more frequent checks on problem doors. Newly completed projects should have a thorough first inspection before handover, because construction damage to seals and frames is common.
If you commission an inspection, share your latest fire strategy, As Fitted drawings if available, and any historic door schedules. The inspector can then flag not only cosmetic damage but wrong-rated doors on critical lines — a high-impact finding that pure “maintenance” contracts sometimes miss.