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Guide

Fire Door Hinges: When Do They Need Replacing?

Hinge defects appear on almost every fire door report we are sent. This guide explains what inspectors are usually recording, what can be corrected with a straightforward hinge renewal, and when a hinge fault is a symptom of something that needs more than new hardware.

Why Hinges Attract So Many Findings

A fire door has to close fully and latch, every time, often against a self-closing device and often several hundred times a week. The hinges carry that load. When they wear, work loose or were never suited to the leaf in the first place, the door drops, the gaps go out, the seals stop meeting the frame and the latch stops engaging cleanly.

That is why a hinge entry on a report frequently sits alongside entries for gaps, closing and latching on the same door. Fixing the hinges properly often resolves several recorded defects at once, which is one of the reasons hinge items are usually good value within a remedial programme.

What Inspectors Typically Record

Usually repairable

Loose or missing screws

Missing fixings, short fixings, mixed screw types or holes that have been stripped out and re-driven. Commonly corrected by making good the fixing points and re-fixing correctly.

Usually repairable

Worn hinge knuckles

Play in the knuckle allows the leaf to sag and bind. Renewal with compatible hinges of the correct size and grade normally restores alignment.

Depends on evidence

Hinges not suited to the doorset

Non-rated, undersized or unmarked hinges found on a fire door. We match replacements to the doorset documentation rather than to a generic specification.

Depends on evidence

Missing hinge pads where specified

Where the tested design includes intumescent hinge protection, it should be present and correctly fitted. Where it does not, adding it is not automatically an improvement.

Often repairable

Packed or over-deep recesses

Recesses cut too deep, or packed out with card and offcuts, affect how the leaf sits. These can frequently be made good where the leaf edge and frame remain sound.

Often repairable

Dropped or binding leaves

A leaf catching on the frame or dragging on the threshold. Often resolved through hinge renewal and rehanging, sometimes with associated adjustment to the frame or closer.

Depends on evidence

Additional or relocated hinges

Extra hinges added later, or hinges moved from their original positions, alter the doorset from its documented arrangement and need reviewing before any remedy is proposed.

Often replacement

Fixing zones no longer sound

Where hinge positions have been cut about repeatedly, or the timber can no longer hold fixings reliably, replacing the leaf or the whole doorset is usually more durable than another repair.

Certification Evidence Governs, Not Rules of Thumb

There is a great deal of confident advice online about how many hinges a fire door must have and what grade they must be. We deliberately avoid repeating it as a universal rule. What a given doorset requires comes from what that doorset was tested and documented with, together with the manufacturer's installation instructions.

Where the doorset can be identified, we match replacement hinges to that evidence. Where it cannot, we say so plainly and set out the options, which may include gathering further evidence from building records or the original supplier, or replacing with a doorset of known specification.

  • Doorset documentation and manufacturer instructions take precedence
  • Replacement hinges matched for size, grade, number and position
  • Intumescent hinge protection fitted where the specification requires it
  • Fixings suited to the leaf, frame and substrate
  • Associated gap, closing and latching defects checked at the same visit
  • What was fitted recorded against the door reference

Hinge Work Within a Wider Programme

Hinge items are rarely worth mobilising for on their own. In practice they are priced and completed alongside seals, closers, latching and gap adjustments as part of a remedial visit — see fire door repairs and remedials.

If you hold an inspection report or fire risk assessment action list, send it over and we will price the hinge entries line by line against your door references. Where a formal inspection report is required, that can be arranged through a specialist fire door inspection contractor; our own site assessment confirms remedial scope and is not a formal inspection report. Our guide to what happens after an inspection explains the sequence.

Frequently Asked Questions

Hinge Defects to Put Right?

Send us your report or action list and we will price the hinge items against your door references, together with any associated gap, closing and latching work on the same doors.

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