FIRE DOOR GUIDES
Should you repair or replace a fire door?
How to decide whether to repair or replace a fire door, by Daniel Storr, Founder & Managing Director · Last reviewed 11 September 2026
Repair when the door is a certified doorset and the faults are to its components: intumescent seals, self-closers, hinges or gaps. Remediation is usually cheaper, faster and fully compliant. Replace with a certified doorset when you need documented, certified status. Replace, too, when the existing door is nominal, notional, damaged beyond economic repair, or of unknown construction. Ultimately, the decision to repair or replace a fire door rests with the building’s responsible person.
There is no single right answer that fits every door. However, there is a clear way to reach the right answer for yours. It starts with knowing what kind of door you are looking at, because that decides what repair can realistically achieve.
START HERE
First, know what kind of fire door you have
The repair-or-replace question can’t be answered until you know whether the door carries test evidence. In practice, doors fall into three groups:
Certified doorsets are manufactured, tested and third-party certificated as a complete assembly — leaf, frame, seals and essential hardware, all proven together to a recognised fire test. They come with a traceable data sheet and installation instructions, and often a label or plug. Their fire performance is documented and demonstrable.
Nominal and notional doors are believed to offer a level of fire resistance based on their construction and professional judgement — but with no supporting test evidence for that specific door. These are common in older buildings, fitted long before third-party certification was widespread.
The distinction matters more than any other single factor in this decision, and we explain it in full in our certified, notional and nominal fire doors guide. For the repair-or-replace question, the key point is simply this: a certified door has evidence behind it; a nominal or notional door does not.
THE HONEST LIMITS
What repair can — and can’t — achieve
Repair is often the right answer. On a certified doorset, replacing worn seals, adjusting gaps, fitting a compliant self-closer or making good minor damage restores the door to the condition it was certified in — properly, compliantly and at a fraction of the cost of replacement.
On a nominal or notional door, repair is more nuanced, and we think you deserve the honest version. We can repair and upgrade components — seals, closers, hinges, glazing beads, gaps — and doing so should improve the door’s integrity and its likely performance in a fire. What we cannot do is turn it into a certified door.
That isn’t a limit of our workmanship; it’s a limit of evidence. Certification depends on test data for that specific assembly. For a nominal or notional door, that evidence was never generated, isn’t available, or in many cases simply doesn’t exist — and it cannot be created retrospectively by upgrading parts. So while we can genuinely improve such a door, we can’t guarantee a rated outcome, because there’s no test evidence to guarantee it against.
REPAIR FIRST
When repairing a fire door is usually the right answer
Our default is to repair where we responsibly can. It’s less disruptive, considerably cheaper, and for a certified door with component faults it’s the fully compliant option. Repair tends to be the right call when:
- the door is a certified doorset and the faults are to components, not the leaf or frame core
- the issues are the common ones — worn or missing seals, incorrect gaps, a failed or non-compliant closer, tired hinges, damaged glazing beads or signage
- the leaf and frame are sound, undamaged and unmodified
- the door is achieving, or can be adjusted to achieve, the correct gaps and closing action
| Fault | Typical remedy |
|---|---|
| Perished or missing intumescent / smoke seals | Replace with correct-spec seals |
| Gaps too wide or uneven (hinge/latch/head) | Adjust, re-hang or re-fit; pack frame where appropriate |
| Threshold gap too large | Fit compliant threshold seal / adjust |
| Self-closer failed, removed or wrong type | Fit compliant self-closer, set correct force |
| Worn or incorrect hinges | Replace with CE/UKCA-marked fire hinges |
| Damaged or missing glazing beads | Replace with correct fire-rated beading |
| Missing / incorrect signage | Fit correct “Fire door — keep shut” signage |
WHEN TO REPLACE
When replacing a fire door is usually the right answer
Replacement moves to the front when either the door is beyond economic or safe repair, or when the objective is documented, certified status that a nominal or notional door can never provide. Replacement tends to be the right call when:
- you need demonstrable, certified performance — for example to satisfy a fire risk assessment finding, an insurer, or a building safety case
- the existing door is nominal or notional and the building’s risk profile calls for evidenced protection
- the leaf or frame is damaged, delaminated, warped or breached (holes, past penetrations, removed cores)
- the door has been modified in ways that void or cast doubt on any original certification
- the door is of unknown construction and can’t be verified
| Repair | Replace with a certified doorset | |
|---|---|---|
| Best when | Certified door, component faults, sound leaf & frame | Nominal/notional door, or damage beyond economic repair |
| Compliance outcome | Restores a certified door to certified condition; improves a nominal/notional door | Delivers documented, certified performance |
| Certification status | Cannot confer certification on a door that never had test evidence | Certified — installed and documented to its test evidence |
| Relative cost | Lower | Higher |
| Disruption | Minimal | Greater (full doorset install) |
| Documentation you hold | Photographed, measured record of the works | Full doorset data sheet + installation record |
THE POINT THAT DECIDES IT
Why a replacement is the only route to certified status
This is the heart of the decision, so we’ll state it as plainly as we can.
A nominal or notional door will not become a certified door, no matter how many components are upgraded — because certification rests on test evidence for that specific assembly, and that evidence isn’t available and can’t be produced after the fact. Upgrading its parts can improve integrity and performance, but the improvement can’t be guaranteed to a rating.
A replacement doorset is different. Because it’s a tested, certificated assembly, we can install it strictly in line with its test evidence and installation data — and document that we’ve done so. That gives you certified status you can actually evidence: the data sheet, the components, and the record of a compliant installation.
So the choice usually comes down to your objective. If the goal is to keep a sound certified door in good order, repair. If the goal is documented, certified protection where none currently exists, replacement is the honest route to it.
A REAL EXAMPLE
Repair or replace a fire door: what happened at Panorama, Southbourne
At the Panorama building in Southbourne, Bournemouth, the client already had a third-party inspection report. It recommended replacing many of the fire doors. Before committing to that spend, they asked us for a second opinion. We surveyed every door ourselves, and our findings were different. Remedial work would bring most of the doors back to a compliant standard, and only one needed a new certified doorset. So that is what we did: repairs across the block, a single replacement doorset, and then a re-inspection with photographs of every door. The client got compliant doors and a clear record for their file, without the cost and disruption of a wholesale replacement. Read more on our Bournemouth fire door repairs page.
KEEP IT PROPORTIONATE
Let the building’s risk guide the decision
None of this means every nominal or notional door must be replaced tomorrow. The right course is proportionate to the risk, and that’s exactly what a fire risk assessment is for — it prioritises which doors matter most, where they are, and what standard of protection the building needs. A flat entrance door onto a single escape route is a different proposition from an internal door in a low-risk setting.
Our role is to give you the facts for each door — its condition, what repair can and can’t achieve, and what replacement would provide — so the decision is made on evidence rather than guesswork. Where repair is genuinely sufficient, we’ll tell you. Where it isn’t, we’ll tell you that too, and explain why.
THE RESPONSIBLE PERSON
The decision is yours to make — we give you the evidence to make it
Under the Regulatory Reform (Fire Safety) Order 2005, responsibility for a building’s fire safety sits with its responsible person. In many residential blocks, the accountable person duties under the Building Safety Act also apply. That is who ultimately decides whether a given door is repaired or replaced, informed by the fire risk assessment and competent advice.
What you should expect from us is straightforward: a clear inspection, an honest recommendation with the reasoning behind it, and the documentation to support whichever route you choose. Every inspection and every repair we carry out is photographed, measured and recorded — so you hold the evidence for your fire safety records, not just our word for it. If you decide to repair, you get the record of the works. If you decide to replace, you get the doorset’s data sheet and a documented, compliant installation.
The decision stays yours. Our job is to make sure it’s an informed one.
NOT SURE WHICH YOU NEED?
Have your doors assessed — then decide
An inspection tells you exactly what you’re dealing with, door by door, with the evidence to back it. From there, the repair-or-replace call is a clear one.
General guidance only — every door should be assessed on its own merits by a competent person and in light of your building’s fire risk assessment.