Fire Door Guide

Does a flat entrance door have to be a fire door?

Yes, in a block of flats the entrance door to each flat is a fire door. Approved Document B sets FD30S (E 30 Sa) with a self-closing device for a door between a flat and a shared corridor. Older doors that met the standard when fitted can stay if they are undamaged.

By Sebastian Grabowski, DC Fire & Security, Luton. Updated November 2026.

What the rules say

This page is about flats in a building with shared common parts in England. The door between the flat and the corridor or stair is the one that matters, because it is what stops a fire in one flat reaching the escape route.

Approved Document B, Appendix C, Table C1 lists a door that separates a flat from a space in common use as FD30S (E 30 Sa). Paragraph C5 adds that fire doorsets to flat entrances should have a self-closing device. Doors inside a flat are not covered in the same way.

Government guidance on the Fire Safety (England) Regulations 2022 treats flat entrance doors as part of the common parts for door checks. The Fire Safety Act 2021 confirmed that they fall under the Fire Safety Order, so the person responsible for the building has duties for them even though the resident lives behind them.

What has to be checked

In buildings above 11 metres, regulation 10 requires the responsible person to check communal fire doors at least every 3 months. Flat entrance doors must be checked at least every 12 months, on a best endeavours basis, and the checks include the self-closing devices. If a resident refuses access, the responsible person keeps a record of the steps taken to get in.

In any block with two or more sets of domestic premises and common parts, residents have to be told to keep fire doors shut, not to tamper with self-closers and to report faults straight away. This applies below 11 metres too.

Older doors and missing labels

Government guidance is realistic here. A door that met the standard when the block was built, or when the door was made, generally stays adequate if it is undamaged and the gaps are not too large. Missing intumescent strips, smoke seals or a label do not by themselves make a door unfit. They do mean the doorset needs a proper look, and where there is real doubt about the door, the fire risk assessment drives what happens next.

In practice we see the same problems on flat entrance doors again and again: worn or painted-over seals, closers that have been removed or disconnected, gaps over 4mm, doors swapped by residents for ordinary doors, and letterboxes jammed open or fitted without fire protection.

When a resident has replaced the door

Government guidance says a resident who has fitted a new door should be able to confirm it is fire resisting, that a competent person fitted it and give you the technical information. If they cannot, treat it as an unknown and have it inspected. A panelled or hollow internal door fitted at the front of a flat does not have a fire rating, and panelled doors lose theirs because the thin panels do not hold. The usual fix is a plain certified doorset.

What to do next

Start with a list of every flat entrance door and which ones you have seen. An inspection gives each door a record, with photographs and a defect list. See fire door inspections for what that involves, who is responsible for fire doors in flats and the flat entrance fire door replacement page if a door has to be replaced.

Sources

Frequently Asked Questions

Is a flat front door always FD30S?
A door between a flat and a shared corridor is listed as FD30S in Approved Document B, which is the standard for new work. For existing doors, what matters is whether the door is a certified fire door in sound condition, and the fire risk assessment decides the detail.
Does the door need a self-closer?
Yes. Approved Document B says fire doorsets to flat entrances should have a self-closing device. Checks under regulation 10 include testing that the closer works, and a door that does not shut itself fails the check.
Who has to check the door, the landlord or the resident?
The responsible person for the building has the duty to check, usually the landlord, freeholder or managing agent. Residents have their own part, which is keeping the door shut and reporting faults. Our guide to fire door regulations for flats covers the split.
Can a resident refuse to let you check the door?
They can refuse, but the responsible person is expected to use best endeavours and keep a record of what was done to get access. Government guidance says legal action may be considered if a resident repeatedly refuses.

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Email your report or photos to info@dcsecurity.co.uk, or use the form. We usually come back with a fixed price the same day. Luton, Bedfordshire, Hertfordshire, Buckinghamshire and London.

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