Fire Door Recertification – What It Means and What You Can Do

What does fire door certification cover?

Start with the difference between a test and a certificate, because the whole subject turns on it.

A fire test proves that one particular door, built in one particular way, held back fire for a set time in a laboratory furnace. In the UK that means BS 476-22, or the European BS EN 1634-1. The test report describes everything about that specimen: the core, the lipping, the glazing, the hinges, the strips, the gaps around the edge. It says nothing about the next door off the production line.

Third-party certification fills that gap. An independent body checks that a manufacturer can build the tested design consistently, audits the factory, and samples finished doors, so that every leaf sold under the scheme matches the evidence. The two big UK schemes are BWF-Certifire, run with Warringtonfire, and BM TRADA Q-Mark. Between them they cover the great majority of timber fire doors made in Britain.

The result reaches site as paperwork and a mark on the door itself:

• a traceability label on the top edge (BWF-Certifire) or a coloured plug in the hinge edge (Q-Mark)
• a certificate number you can look up
• a data sheet setting out the permitted ironmongery, glazing, gaps and frame
• installation instructions

Product certification and installation certification

Those four items describe the product. A separate layer covers the people who hang it. Schemes such as Q-Mark Fire Door Installation and FIRAS certify installers, auditing their work on real sites, so the finished doorset matches the manufacturer’s instructions.

You need both for a fully evidenced door: a certified product, fitted by someone whose work has been checked. A certified leaf hung badly is a certified leaf in an uncertified opening.

So what happens to all of this ten years later?

Does fire door certification expire?

No. A door’s certification has no renewal date. It describes how the door left the factory, and it stays true for as long as the door remains as manufactured and correctly fitted.

This is the misconception behind most recertification enquiries. People see that the manufacturer’s scheme membership renews every few years, or that an installer has just been recertified by BM TRADA, and assume the doors themselves need the same treatment. They do not. A company renews its certificate. A door keeps its status or loses it.

What a door can lose, it cannot easily regain. The British Woodworking Federation states plainly that a fire door already installed in a building cannot be certified retrospectively. No inspector, however experienced, can look at a finished leaf and confirm what is inside it: the core density, the glue lines, the lipping material, the hidden reinforcement behind the hinges. Certification depends on controlled manufacture, and nobody can audit a factory process after the fact.

That is the blunt answer. You cannot recertify a fire door by inspection.

What fire door recertification usually means in practice

When a contractor offers fire door recertification, the offer normally covers one of three things, and it helps to know which one you are buying.

The first is an inspection that confirms an existing certified door still matches its certification. That is valuable, and it is what most buildings need. The second is repair or upgrade work carried out under a certification scheme, which keeps a certified door within its evidence. The third is replacement of the doorset with a new certified one. All three are legitimate. A fresh certificate for an unidentified door, issued on the strength of a site visit, is not one of them, and any offer that sounds like that deserves a hard question about which scheme stands behind it.

What breaks a fire door’s certification?

Any change the data sheet does not allow. The certificate covers a defined field of application, the range of sizes, hardware and details that the test evidence supports, and stepping outside it takes the door out of scope.

The pattern you’ll notice on inspection reports is that the damage rarely comes from neglect. It comes from well-meant work by somebody who did not know the door was special. A maintenance operative swaps a broken lever handle for whatever the van carried, and the new latch has no fire test behind it. A joiner trims 5 mm off the bottom edge to clear new flooring and removes the lipping with it. Somebody cuts a vision panel on site so staff can see through, then beads in a pane of ordinary toughened glass. An electrician drills through the leaf for an access control cable. A decorator paints over the label and the strips in the same afternoon. A letterplate gets fitted to a door that was never certified for one.

Each of these looks like a small job.

Most of them are irreversible in certification terms, because the original evidence never covered the result. The glazing case catches more owners than any other: BWF-Certifire guidance warns that a door altered by fitting a vision panel, without a second label showing the work was done under the scheme, may have its certificate invalidated.

Repairs that do not break it

Not every change spells the end, which should reassure anyone facing a long list of remedials. Replacing a closer, hinge or seal with a product the data sheet lists keeps the door in scope. So does adjusting gaps back to tolerance, typically 3 mm along the head and jambs (many data sheets allow up to 4 mm), or refitting strips of the specified size. Glazing can be added after manufacture when a licensed converter, approved under the door’s own scheme, does the work and labels it.

The question to ask of any repair is simple: does the data sheet allow this exact part, in this exact position?

How to recertify a fire door, as far as anyone can

The honest route depends on what you have in front of you, and there are four starting points.

A certified door, unaltered

The easiest case. Find the label or plug, note the certificate number, and keep the door inside its data sheet from now on. An inspection by a competent person confirms the door still matches, and that inspection record is the closest thing to recertification you will ever need.

A certified door with faults

Use a contractor working under a maintenance scheme. BM TRADA runs a Q-Mark Fire Door Maintenance scheme in which certified firms carry out Approved Repair Techniques, defined methods for jobs such as splicing in new timber, re-lipping an edge or replacing strips, that keep a certified door within its evidence. Each repair gets recorded against the door, so the paper trail survives the work.

One catch matters here. These schemes repair certified doors. Where a surveyor notes that no certification can be seen, a maintenance contractor generally cannot carry out repairs under the scheme on that door, and the realistic choice narrows to doing the work as uncertified remedials or replacing the doorset.

An uncertified or unidentified door

This is where most of the frustration lives. An old door with no label, or one whose manufacturer went bust years ago, has no evidence anyone can point to. Some owners commission a fire engineer’s assessment, a written opinion based on the construction that can be seen, and in a lower-risk building a fire risk assessor may accept a sound, well-fitted door on that basis, perhaps with new strips, seals and a closer. In most cases that is a judgement for that door in that building, not a certificate, and it does not transfer.

Replacement

A new certified doorset, fitted by a certified installer, gives you a complete record from day one. My view, which some repair specialists will dispute, is that once a door needs more than two or three significant remedials, replacement nearly always works out cheaper over the life of the building. Repair firms argue that sound old doors deserve saving, and in heritage buildings they are often right. Elsewhere, flogging a dead horse costs more than buying a new one.

Replacement has its own limit, though. Where a door sits in a glazed screen or a fire-rated frame with its own evidence, as many commercial doorsets do, the surrounding system has to match the new leaf too. Swapping the door alone can leave a certified leaf in an opening nobody has tested.

What are the fire door certification requirements in law?

The law asks for doors that work, not for certificates as such. Under the Fire Safety Order, the main fire safety law for non-domestic premises and the shared parts of residential blocks in England and Wales, the responsible person must keep fire precautions, including fire doors, in efficient working order and good repair. Nothing in the Order says a door must carry a label.

In practice, though, certification is how you prove the door works. Building control expects certified doorsets on new work, insurers increasingly ask for them, and a fire risk assessor faced with an unidentified door has little to go on. Where something goes wrong, a record showing certified products, certified installers and regular inspection is the strongest position you can hold.

For residential buildings in England, the Fire Safety (England) Regulations 2022 added specific duties from 23 January 2023. Regulation 10 requires checks of communal fire doors every three months, and best endeavours to check flat entrance doors every year, in blocks with a top storey more than 11 m above ground. Those checks look at condition and function. They do not recertify anything, but they are where loss of certification usually gets spotted.

If your building falls into that group and nobody can produce last quarter’s door records, deal with that before anything else on this page.

The 2029 change

One date is worth watching. Approved Document B stops recognising the British BS 476 test route on 2 September 2029, with transitional arrangements for work already under way. Existing doors certified under BS 476 do not suddenly become non-compliant on that date. New and replacement doors after it, however, will need European classification, so if a replacement programme is likely to run into the next decade, ask suppliers now which evidence they hold.

Working through fire door recertification on your own building

Take the doors one at a time, in this order.

1. Look for the label on the top edge or a plug in the hinge edge, and record the certificate number.
2. Obtain the data sheet for that certificate from the manufacturer or the scheme.
3. Compare the door against it: ironmongery, glazing, gaps, strips, seals and any holes or cuts.
4. Sort each door into one of the four groups above: unaltered, certified with faults, unidentified, or due for replacement.
5. Send certified doors with faults to a contractor working under a maintenance scheme.
6. Ask a fire risk assessor to judge the unidentified doors, and price replacement alongside any repair.
7. Keep every record, photograph and label number in one place.

On a small property with a handful of doors, a competent inspector can cover the first four steps in a morning. Large estates need a door register and a programme.

Viewed as a whole, fire door recertification is less a procedure than a set of choices. Certification belongs to how a door was made and fitted, it does not expire, and an installed door cannot gain it after the event. What breaks it is change outside the data sheet: the wrong handle, a trimmed edge, a site-cut panel, an unapproved hole. A certified door with faults can stay certified through repairs under a maintenance scheme, an unidentified door can at best be assessed for its building, and replacement gives a clean record from the start. The law in England asks for doors kept in good working order, with regular checks in taller residential blocks, and certification remains the clearest way to show that yours are. Keep the labels visible, keep the paperwork together, and let nobody touch a fire door without checking what it is allowed to carry.