Check Your Fire Door Compliance: 6 Signs You Verify Today

A fire door that passes a visual inspection and carries the right documentation meets the baseline for compliance in most UK properties. You look for intact seals, a functioning closer, a visible rating label and proof of original certification. The checks below let you assess your own doors without specialist equipment, and the final section covers when to call in a surveyor.

Look for the Rating Label on the Door Edge

Every compliant fire door carries a label on its top or hinge edge that states its fire resistance—most often FD30 or FD60, meaning the door resists fire for thirty or sixty minutes when closed. The label also names the certifying body and the door manufacturer. Check the edge when the door is open: a label that has been painted over or damaged may still be readable, but if you cannot make out the rating or the certifying body, you have no proof of compliance.

What the Label Tells You

The fire resistance figure applies to the door and frame together, not the door alone. An FD30 door fitted into an uncertified frame loses its rating. The certifying body—usually Certifire, BM TRADA or Warrington Certification—confirms that the door was tested to BS 476 or EN standards. No label means no certification, and you treat the door as a standard internal door until it is replaced or re-certified.

Check the Intumescent Strips and Smoke Seals

Intumescent strips expand when heated, sealing the gap between the door and frame to stop fire and smoke spreading. They sit in grooves on the door edge or the frame, and you see them as a narrow band of pale material running the height and width of the door. Smoke seals—brush-like strips that block smoke at room temperature—often sit alongside them. Both must be intact along their full length: a strip that has lifted, torn or been painted over no longer works.

Run your finger along the edge where the door meets the frame. The strips should feel firm and unbroken. If you find gaps, loose sections or hardened paint across the strip, the seal is compromised. Replacement strips are available from Fred Duncombe, and fitting them is straightforward when the grooves remain clean.

Inspect the Self-Closing Mechanism

A fire door must close and latch on its own from any angle, every time. The door closer—an overhead hydraulic unit or a concealed device in the frame—provides the force to pull the door shut. Open the door to various positions and release it: it should return smoothly to a fully latched state without sticking or bouncing open. A closer that leaves the door ajar, or one that slams shut too quickly, fails the compliance test.

Adjust or Replace a Faulty Closer

Most overhead closers have adjustment screws that control closing speed and latching force. Turn them in small increments until the door closes firmly but not violently. If adjustment does not restore proper function, the closer has likely reached the end of its service life and needs replacing. For guidance on stopping a door that slams, see how to adjust your fire door closer.

Verify the Door Has Not Been Altered

Any modification that breaks the door's structure or seals voids its fire rating. Common alterations that disqualify a door include:

• Cutting holes for cat flaps, letter boxes or new glazing
• Trimming the door down by more than the manufacturer allows—usually no more than a few millimetres per edge
• Replacing hinges, locks or handles with non-certified alternatives
• Painting over intumescent strips or the rating label

If the door carries any of these changes, it no longer holds its certified fire resistance. You may reinstate compliance by reversing simple alterations, such as repainting without covering seals, but structural changes require a new door. For alternative ways to accommodate pets whilst keeping fire doors compliant, read the options that preserve certification.

Confirm the Frame Matches the Door

The frame must be rated for the same fire resistance as the door, and it must be fitted with intumescent strips if the door does not carry them. A certified door hung in a standard timber frame loses its rating. Look for a label or stamp on the frame itself, usually on the hinge side, that names the manufacturer and the fire resistance. If the frame label is missing, check the original installation certificate: it should list both the door and frame by model number.

Obtain the Installation Certificate

The installer should have provided a certificate when the door was fitted, naming the door model, frame, hardware and the installer's details. This document proves that the door was installed to the manufacturer's instructions and that every component holds the correct fire rating. If you do not have the certificate—common in older properties or after a change of ownership—contact the installer or the door manufacturer with the model numbers from the labels. They may be able to issue a duplicate or confirm the door's specification.

Where no certificate exists and the labels are illegible, you have two options: commission a fire door inspection by a qualified surveyor, or replace the door with a newly certified unit. An inspection costs less than replacement and may confirm compliance if the door and frame are in good condition.

Steps You Take to Verify Compliance

1. Open the door and locate the rating label on the top or hinge edge—photograph it for your records.
2. Examine the intumescent strips and smoke seals along the door edge and frame, checking for damage or gaps.
3. Test the door closer by opening the door fully and releasing it, confirming it closes and latches without intervention.
4. Check for any alterations to the door—holes, excessive trimming, replaced hardware—that void the rating.
5. Locate the frame label or stamp and confirm it matches the door's fire resistance.
6. Retrieve the installation certificate or contact the installer to obtain one if it is missing.

When to Call a Surveyor

A surveyor inspects fire doors as part of a Fire Risk Assessment or a standalone compliance check. You arrange a survey when the door shows signs of failure—damaged seals, a non-functioning closer, missing labels—or when you cannot locate the original certification. The surveyor tests the door's operation, measures gaps around the frame and reviews the hardware against current standards. Their report tells you whether the door meets Approved Document B and the Fire Safety Order, and it lists any remedial work required.

Landlords and commercial property owners must arrange regular fire door inspections—typically every six months—as part of their legal duty. Residential property owners benefit from a survey before selling or letting, as a compliant fire door is often a condition of insurance and mortgage approval.

#Fire door #Compliance #FD30 rating #Intumescent strip

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