Fire doors play a critical role in protecting life and property. They are designed to slow the spread of fire and smoke, giving people vital time to escape and allowing the fire and rescue service to carry out their duties safely. In the UK, fire doors are not optional—they are a legal requirement in many types of buildings.
Under the Regulatory Reform (Fire Safety) Order 2005, the Responsible Person (such as a landlord, managing agent, employer, or building owner) must take general fire precautions to ensure the safety of relevant persons.
This includes providing appropriate fire-resisting doors where they are necessary to:
Protect escape routes
Separate higher-risk areas (such as kitchens, plant rooms, or bin stores)
Reduce the spread of fire and smoke between compartments
Failure to provide or maintain suitable fire doors can result in enforcement action, prosecution, unlimited fines, and in serious cases, imprisonment.
Fire doors are commonly required in:
Blocks of flats – including flat entrance doors opening onto communal areas
HMOs – typically to bedrooms, kitchens, and protected stairways
Commercial premises – offices, shops, warehouses, and industrial units
Care homes, hotels, and guest accommodation
Converted buildings where a single escape route is shared
The exact requirement depends on the building’s layout, height, use, and occupancy, which is why a fire risk assessment is essential.
A compliant fire door is aT part of a tested and certificated door set, not just the door leaf. It will usually include:
A fire-resisting door leaf (e.g. FD30 or FD60)
Fire-rated frame
Intumescent (and often cold smoke) seals
Self-closing device
Fire-rated hinges, locks, and glazing (if present)
Gaps, damage, missing seals, non-compliant ironmongery, or disabled closers can all cause a fire door to fail in a real fire, even if it looks fine at first glance.
The law does not stop at installation. Fire doors must be maintained in an efficient state, in efficient working order, and in good repair.
Best practice guidance requires:
Regular visual checks (especially in communal areas)
Periodic documented fire door inspections by a competent person
Prompt repair of defects such as damaged seals, excessive gaps, or faulty closers
In residential buildings over 11 metres, additional duties apply, including regular checks of communal fire doors and flat entrance doors.
The responsibility sits with the Responsible Person for the premises. Relying on tenants, residents, or contractors without proper oversight does not remove legal liability.
If you manage or own a building, you must be able to demonstrate that:
Fire doors are required (or not) based on risk
Correct doors have been installed
Inspections and maintenance are being carried out
Defects are identified and acted upon
At Dorset Fire Wise, we carry out:
Fire risk assessments
Fire door inspections and surveys
Clear reporting with practical, proportionate recommendations
Our aim is to help you stay compliant, reduce risk, and protect the people who use your building.
If you’re unsure whether your property has the correct fire doors—or whether they’re still performing as they should—get in touch for professional advice
