Fire Door Compliance Explained

Posted on November 2, 2026 in Building Maintenance

A flat entrance door is fire compliant when the whole door set (leaf, frame, seals, hinges and closer) is certified, correctly fitted, in good condition and closes itself firmly every time.

It may look like an ordinary front door, but in a block of flats it has a very important job. If a fire starts in one flat, the door holds back flames and smoke for long enough to keep escape routes clear and give the fire and rescue service time to arrive. Get it wrong and the door is just a fancy piece of timber.

Why flat doors are under the spotlight

Since the Fire Safety Act 2021, the front doors of individual flats fall within the fire safety rules for the building. Under the Fire Safety (England) Regulations 2022, responsible persons in multi-occupied residential buildings must check flat entrance doors at least annually, and communal fire doors at least quarterly in buildings over 11 metres. They must also share fire door safety information with residents. Property managers, freeholders and residents’ management companies all need to keep up.

What makes a residents’ door fire compliant?

Think of a fire door as a team. Every member must be present and doing its job. Here is what the team looks like:

Component

What to look for

Fire rating

Usually FD30S (30 minutes’ fire resistance with smoke control). Some buildings need FD60, so check your fire risk assessment.

Certification

Third-party certified, such as BM TRADA Q-Mark or Certifire, with a label, plug or paperwork to prove it.

Door leaf and frame

Solid, undamaged and tested together as a set. No holes, deep gouges or home-made alterations.

Gaps

Typically 2 to 4mm around the top and sides. The gap at the bottom should be no more than the certificate allows (often up to 10mm).

Intumescent strips and smoke seals

Continuous, undamaged and not painted over. In a fire, the strips expand to seal the gaps.

Hinges

At least three, fire-rated, with every screw in place and no sign of wear.

Self-closing device

Closes the door fully from any open position and latches it shut.

Glazing, letterbox and spyhole

Fire-rated, tested for use in that door and properly fitted.

The golden rule: it’s a set, not a shopping list

A fire door is tested as a complete assembly. Swapping in a different frame, a cheaper hinge or a standard letterbox can undo that certification. It is a bit like a recipe: change the ingredients and you cannot promise the result.

Common faults that fail the test

The same problems turn up again and again in blocks across London and the Home Counties:

  • Gaps that are too big or too small. Doors drop on their hinges over time, or get shaved to fit a swollen frame.
  • Damaged or painted-over seals. A thick coat of paint on intumescent strips stops them working.
  • Missing or weak closers. If the door does not close by itself, it is not doing its job.
  • DIY replacements. A door bought online, a new lock cut in or a cat flap added can all break compliance.
  • Wrong or missing hardware. Loose hinges, absent screws or non-rated letterboxes.
  • No proof. Without a label or paperwork, it is hard to show the door is certified.

Residents often mean well, so a friendly note explaining why the door matters goes a long way. Please remind them never to wedge a fire door open, and to report any damage promptly.

A quick door check

This simple check will help you spot problems early:

▢  Is there a certification label, plug or paperwork?

▢  Does the door close fully by itself from any angle?

▢  Are the gaps even and about the width of a coin (2 to 4mm)?

▢  Are the seals intact, continuous and unpainted?

▢  Are there at least three hinges, with no missing screws?

▢  Is any glazing, letterbox or spyhole intact and fire-rated?

If any answer is “no”, it is time to call in the experts. This checklist is a helpful first look, not a replacement for a competent inspection.

How Protech Property Solutions can help

Our Fire Door Compliance department is BM TRADA accredited, and we have cared for properties for over forty years. We keep things clear and straightforward:

  1. Initial consultation: we learn about your building and your needs.
  2. Assessment and planning: we survey the doors and agree a practical plan.
  3. Testing and verification: we check each door against the requirements.
  4. Documentation and compliance support: you receive clear records to show you are meeting your duties.

We work with property management companies across London and the Home Counties, and we are just a short hop from Potters Bar.

Ready to check your doors? Call us on 01707 644 601, email info@protechpropertysolutions.co.uk or visit www.protechpropertysolutions.co.uk.

This article is general information for England and is not legal advice. Always refer to your building’s fire risk assessment.