Reading fire door certification

Where the evidence lives

Open the leaf and look along its edges with a torch. You are looking for a label or a small plug set flush into the timber.

The top edge

Where most certified leaves carry their mark. Sometimes a printed label, sometimes a coloured plug pressed into a drilled hole. It is above eye level and easy to walk past.

The hanging edge

Some schemes mark the hinge edge instead, or as well as the top. Check it before concluding that a door is unmarked.

The frame, and anything glazed

Frames and glazing systems carry evidence of their own. A certified leaf hung in a frame with no evidence is not necessarily a certified fire door: the rating belongs to the whole assembly.A leaf that has been painted over, planed down or re-lipped may have lost its mark. That is not proof the door was never certified, and it is not always a point of non-compliance in itself. It is a caveat an inspector records in the report: the rating can no longer be identified on the door in front of them.

What the mark carries

UK schemes you will meet include BM TRADA Q-Mark, Certifire and IFC Certification. They differ in layout, wording and appearance, and each mark belongs to the body that issues it. What they have in common is the set of facts they carry, so learn the fields rather than the logos and any scheme's mark becomes readable.

The certification body

Who is standing behind the claim, and therefore whose register you will be checking it against.

A certificate or licence number

The field that does the actual work. Everything else on the mark is a summary; this is the reference you check on the register.

The product reference

Which certified construction this leaf is meant to be. It is what lets you compare the door in front of you against what is permitted.

The rating

FD30, FD60 and so on: the period of integrity the tested construction achieved. Printed on a label it is a claim. Confirmed on the register against a matching scope, it is supporting evidence.

Manufacturer, and a date or batch

Who made it and when, which is how a particular door is tied back to a production run and to the factory control behind it.Colour conventions are not shared between schemes, so the colour of a plug does not on its own establish a rating. Read the number.

Read the certificate, not just the mark

The mark points at a certificate, and the certificate has a scope. The scope is where most doors come unstuck, because a door can carry a genuine mark and still sit outside what that certificate covers.

Leaf construction and size

Certificates cover the allowed constructions within stated size limits. A leaf cut down, or made larger than the certificate allows, is no longer the thing that was approved.

Ironmongery

Components such as hinges, closers, locks, latches and panic hardware that are permitted. Swapping in something that was never tested with this leaf changes the door applications the certificate describes.

Glazing and vision panels

The glass, the bead, the seal and the size of the aperture are all part of what was tested. A vision panel cut into a door after manufacture is a new configuration.

Intumescent and smoke seals

Type, size and position are specified by the evidence, not chosen on site. The right quantity of the wrong product is still the wrong product.

The frame, and the wall it sits in

Certificates state what the door was tested in. A fire door proven in a masonry opening is not automatically proven in a stud partition.A door modified after it left the factory — a second lock, a new letter plate, an added vision panel — is outside its certification unless the certificate allows that work. The mark stays in the edge and quietly stops being true.

Checking it, and what to do when there is no mark

Take the number to the register

Certification bodies publish registers of the certificates they have issued, searchable by number. That is the step that turns a label into evidence, and it is the step most often skipped.

Match the scope to the door in front of you

Finding the certificate is half of it. The other half is confirming that this leaf, this frame, this ironmongery and this glazing are the ones it covers, in the application the door is actually being used for.

No scheme mark is not automatically no evidence

Third-party certification is the common route, not the only one. A fire door can be evidenced by its own test report, by an assessment covering a configuration close to one that was tested, or by a classification report. Existing doors may hold evidence from earlier national BS 476 testing as well as from BS EN 1634-1; the regulatory transition towards the European classifications is continuing, and the applicable guidance at the time governs. What cannot happen is the evidence simply not existing.

Certificated, nominal and notional

Not every fire door in a building is a certificated one, and the words for the others get used loosely. They mean different things, and a report has to be clear about which of the three it is describing.

Certificated

Performance is evidenced. A current certificate or test evidence covers this construction, and the mark in the edge traces the door back to it. This is the only one of the three where the rating is demonstrated rather than judged.

Nominal

A timber-based door that, in the professional opinion of a competent fire door inspector, is likely to provide a defined period of fire resistance. That opinion is formed from the door's construction, its condition and the components installed in it, rather than from a current fire test certificate or certification label.

Notional

An existing door taken to have met the fire-resisting door standard that applied when the building was originally constructed. Government guidance recognises that these doors may differ from modern fire doors, and may not have features now commonly expected of one, such as intumescent strips and cold smoke seals.Nominal and notional are judgements about a door, not evidence from a furnace. Neither becomes a certificated fire door because a rating was written on a report, and the reasoning behind either belongs in writing with the person who formed it.