Fire doors in leasehold flats
Proving a fire door is compliant
The front door to your flat should have complied with building fire safety regulations when it was installed.
If you’re fitting a new door or making changes to an existing one, it needs to meet the current building regulations for fire safety.
Types of fire door
Fire doors are classified by their ability to resist fire and smoke for a specified period. The most common ratings used in buildings are FD30 and FD60.
FD30 (Fire Door 30 Minutes)
- Protects against fire for a minimum of 30 minutes
- Usually 44 to 45mm thick
- Standard for most flat entrance doors and internal fire doors in residential buildings
- Flat entrance doors are usually FD30S, which means they also include cold smoke seals that expand in heat to also provide protection from smoke
FD60 (Fire Door 60 Minutes)
- Protects against fire for a minimum of 60 minutes
- Usually 54mm thick
- Used in higher-risk areas or where longer fire resistance is needed
All FD30 and FD60 doors must be labelled to prove they have passed the relevant tests.
A fire door should not need to be replaced if it is fully functional and provides proper protection.
What type of fire door is needed
The type of fire door needed depends on a building’s design and fire risk assessment, including:
- how the spread of fire and smoke is managed (compartmentation strategy)
- escape routes
- the door’s location, for example protected stairwells or higher-risk areas may need FD60 doors
Find out more
- Last updated:
- 29 April 2026
- Next review:
- 29 April 2028
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