Fire Door Regulations: The Complete UK Guide

Fire door regulations are essential for protecting people and property from the spread of fire and smoke. In England, requirements are primarily governed by the Regulatory Reform (Fire Safety) Order 2005, the Building Regulations 2010 and additional legislation affecting residential buildings.

Fire doors form an important part of a building’s passive fire protection system. When correctly specified, installed and maintained, they help contain fire within designated areas and protect escape routes.

However, fire door requirements vary depending on the building’s use, layout, height and fire safety strategy. Understanding these differences is essential for building owners, landlords, facilities managers and other responsible persons.

In this guide, Adaston explains the key fire door regulations, including installation standards, signage requirements, inspections, maintenance and responsibilities for commercial and residential buildings.

What Are Fire Doors and What Do They Do?

Fire doors are specially designed and tested doorsets that help prevent fire and, where specified, smoke from spreading between different parts of a building.

Unlike conventional internal doors, fire doors form part of a wider fire-resisting construction system. Their primary functions are to:

• Restrict the spread of flames and hot gases.
• Protect corridors, stairways and escape routes.
• Support the building’s fire compartmentation strategy.
• Allow occupants additional time to evacuate.
• Help protect adjoining areas while emergency services respond.

Fire doors are commonly classified according to their fire resistance performance.

These ratings describe performance under specified fire-resistance testing conditions. They do not guarantee that a door will withstand every real-world fire for the stated period.

The required rating depends on the door’s position, the building design and the relevant fire safety requirements. FD30 and FD60 doors are commonly specified, but not every fire door must have a minimum FD30 rating.

Where smoke control is required, additional smoke leakage performance may also need to be demonstrated.

Fire doors should be assessed as complete assemblies, including the leaf, frame, glazing, seals and associated hardware.

Fire Door Signage Regulations

Fire door signage requirements depend on the door’s location, function and building type.

Under Approved Document B, fire doorsets within its scope should display appropriate signs complying with BS 5499-5, subject to specific exceptions.

The most commonly specified signs include:

• Fire Door Keep Shut: Used on fire doors that should remain closed when not in use.
• Fire Door Keep Locked Shut: Used on designated doors, including certain service cupboards, which must remain locked when not in use.
• Automatic Fire Door Keep Clear: Used for fire doors held open by an automatic release mechanism or fitted with an appropriate free-swing device.

Signs should be clearly visible and appropriate to the door’s intended function.

For applicable fire doorsets, signage is generally provided on both sides. However, fire doors to cupboards and service ducts normally require signage on the outside only.

There are also important exceptions. Under Approved Document B, the specific signage provisions do not apply to:

• Doors to and within flats and dwellinghouses.
• Bedroom doors in certain residential accommodation.
• Lift entrance and landing doors.

This means it is incorrect to assume that every fire door must display a blue and white sign on both sides.

Building owners and responsible persons should check the applicable guidance, fire risk assessment and building fire strategy when determining which signs are required.

Correct signage also helps occupants understand whether a fire door should remain closed, locked or unobstructed.

Components of a Fire Door

A fire door consists of several components that must work together to provide the required fire resistance.

These typically include:

• Door leaf: The main door panel, constructed and tested to achieve a specified fire resistance performance.
• Door frame: The supporting structure that holds the door in place.
• Intumescent seals: Materials designed to expand when exposed to heat, helping seal gaps around the door.
• Smoke seals: Components used to restrict smoke leakage where smoke control is required.
• Hinges: Hardware capable of supporting the door under normal conditions and during fire exposure.
• Self-closing devices: Mechanisms that return a door to its closed position where required.
• Glazing: Fire-resisting glass and glazing systems suitable for the doorset’s specification.
• Locks and handles: Appropriate hardware compatible with the tested assembly.

A fire door’s performance depends on the compatibility and condition of these components.

For example, damaged seals, unsuitable replacement hardware or excessive gaps around a door can compromise its fire resistance.

The gaps at the top and sides of a fire door are commonly expected to be around 2–4mm, although the correct tolerances depend on the manufacturer’s instructions and test evidence. Threshold gaps require separate consideration, particularly where smoke control is required.

For more detailed measurements, inspection guidance and common defects, read our fire door gap regulations guide.

Professional fire door installation helps ensure the complete assembly is fitted in accordance with its specification.

Fire Exit Doors vs Fire Doors

Fire doors and fire exit doors serve different purposes, although some doors may perform both functions.

A fire door is designed to resist the passage of fire and, where required, smoke between compartments or protected areas.

A fire exit door provides a means of escape from a building during an emergency. It must allow occupants to exit safely and may require suitable emergency or panic exit hardware.

Not every final exit door needs to be fire-resisting. Equally, not every fire door is intended to act as an emergency exit.

The required specification depends on the building’s means of escape strategy and fire safety design.

Which Buildings Need Fire Doors?

Fire door requirements vary according to building use, occupancy, layout and construction.

In England, Approved Document B provides guidance on satisfying relevant Building Regulations requirements, while the Regulatory Reform (Fire Safety) Order 2005 governs fire safety responsibilities in premises within its scope.

The need for particular fire doors should be established through the building design and a suitable fire risk assessment.

Private Dwellings

Not every internal door in a private home needs to be fire-resisting.

However, fire doors may be required in specific locations, such as:

• Between an integral garage and the dwelling.
• Along protected escape routes in certain multi-storey homes.
• In loft conversions where a protected stairway is required.
• Where the approved building design specifies fire-resisting separation.

Requirements depend on the property’s layout, age and the building work being undertaken.

Homeowners planning extensions, loft conversions or alterations should check the applicable Building Regulations requirements before replacing or modifying doors.

Multipurpose Buildings

Buildings combining residential and commercial uses often require fire-resisting separation between different occupancy areas.

Examples include flats situated above shops, restaurants or offices.

Fire doors may be needed to protect shared escape routes, prevent fire spreading between different uses and support the building’s compartmentation strategy.

The required fire resistance depends on the relevant building design and fire safety assessment.

Commercial Buildings

Commercial premises must have appropriate fire precautions based on the risks associated with their use.

Fire doors are commonly installed in:

• Protected stairways and corridors.
• Compartment walls.
• Plant rooms and service cupboards.
• Storage areas presenting particular fire risks.
• Routes used for emergency evacuation.

Under the Fire Safety Order, the responsible person must ensure suitable fire precautions are provided and maintained.

Fire doors should therefore be considered as part of a wider strategy covering compartmentation, escape routes, detection, emergency procedures and maintenance.

Existing buildings may also require remedial work where inspections identify defective or inadequate fire doors.

Fire Door Regulations for Flats Over 11 Metres

The Fire Safety (England) Regulations 2022 introduced additional requirements for multi-occupied residential buildings in England.

For residential buildings where the top storey is more than 11 metres above ground level, responsible persons must:

• Check communal fire doors at least every three months.
• Use best endeavours to check flat entrance fire doors at least every 12 months.
• Include self-closing devices within these checks.
• Keep records of attempts to inspect flat entrance doors, including where access cannot be obtained.

These duties have applied since 23 January 2023.

The regulations also require responsible persons for multi-occupied residential buildings with common parts to provide residents with relevant information about fire doors, including the importance of keeping them closed and reporting defects.

Buildings meeting the higher-risk building criteria under the Building Safety Act 2022 have additional building safety duties.

For occupied higher-risk residential buildings, these criteria generally include having at least two residential units and being at least 18 metres high or having at least seven storeys.

Accountable persons must comply with applicable building safety obligations, which operate alongside fire safety requirements.

For further information about flat entrance doors, communal fire doors, inspections and landlord responsibilities, read our complete guide to fire door regulations for flats.

Fire Door Installation Regulations

Correct installation is essential to ensuring a fire door performs as intended.

Even a certified fire doorset can fail to provide the required protection if its components are fitted incorrectly or incompatible materials are used.

Fire door installations must satisfy applicable Building Regulations and the approved fire safety design.

Important installation considerations include:

• Selecting a doorset with suitable fire resistance evidence.
• Using compatible frames, seals, glazing and hardware.
• Following manufacturer installation instructions.
• Maintaining appropriate clearances around the door.
• Ensuring any required self-closing device operates correctly.
• Properly fire stopping the junction between the frame and surrounding wall.
• Verifying that the finished installation matches the approved specification.

Fire door installation should be undertaken by individuals with the necessary skills, knowledge and experience.

Third-party certification can provide additional assurance of installer competence and quality management, although the legal requirements depend on the work and circumstances.

Adaston’s experienced team provides fire door installation services for commercial, residential and other buildings, helping clients meet their fire safety responsibilities.

How Often Should Fire Doors Be Checked?

Fire door inspection frequency depends on the type of building, the door’s location, usage and applicable legislation.

There is no single inspection interval that applies to every fire door in every building.

For commercial buildings, the responsible person must ensure fire doors are maintained in an efficient state, working order and good repair under Article 17 of the Fire Safety Order.

Inspection arrangements should be informed by the fire risk assessment and relevant maintenance guidance.

Doors subjected to frequent use, impact damage or heavy traffic may require more regular checks.

Fire Door Inspection Frequency

The statutory checks required in qualifying residential buildings are generally routine visual and operational checks. They do not automatically require a detailed technical survey by a specialist.

However, professional fire door inspections may be necessary where defects, installation concerns or uncertainties about compliance are identified.

What Should a Fire Door Inspection Include?

A routine fire door inspection should consider the condition and operation of the complete door assembly.

Important checks include:

1. Door condition: Look for cracks, warping, impact damage or alterations.
2. Door frame: Check for movement, damage and visible defects.
3. Seals: Confirm that intumescent strips and smoke seals are present and undamaged where specified.
4. Hinges and hardware: Check for loose, missing or damaged components.
5. Self-closing mechanism: Confirm that the door closes fully into its frame and engages with the latch where applicable.
6. Gaps and clearances: Identify unusual or excessive gaps that may affect performance.
7. Glazing: Check that any glazed panels and associated seals appear secure and undamaged.
8. Signage: Verify that appropriate signs are fitted where required.
9. Obstructions: Check that doors are not wedged open or prevented from closing.
10. Maintenance records: Record identified defects and the remedial action required.

Where a fire door fails an inspection, the responsible person should assess the associated risk and arrange appropriate corrective action.

Recording Fire Door Inspections and Maintenance

Accurate documentation is an important part of fire safety management.

Section 156 of the Building Safety Act 2022 strengthened record-keeping requirements under the Fire Safety Order, including the duty to record fire risk assessments and their findings.

For buildings subject to the Fire Safety (England) Regulations 2022, records of attempts to inspect flat entrance fire doors are specifically required.

Maintaining appropriate inspection and maintenance records can help responsible persons demonstrate that defects have been identified, managed and addressed.

Useful records may include:

• Door identification and location.
• Inspection dates.
• Identified damage or defects.
• Photographs of non-compliant components.
• Required repairs or replacement work.
• Completion dates and evidence of remedial works.

Professional fire door maintenance can help building managers address defects and maintain the performance of existing fire doors.

Who Is Responsible for Fire Door Compliance?

Responsibility for fire door compliance depends on the ownership, management and use of a building.

In workplaces and many non-domestic premises, the responsible person under the Fire Safety Order is typically the employer, owner, landlord or another person with control of the premises.

Their duties include ensuring that appropriate fire precautions are provided, maintained and reviewed.

Where several organisations share responsibility for a building, they must cooperate and coordinate their fire safety arrangements.

For multi-occupied residential buildings, responsibilities may extend to common areas and flat entrance doors, depending on the relevant legislation.

Although qualified specialists can provide inspections, installation and maintenance services, appointing a contractor does not automatically transfer the responsible person’s statutory duties.

What Happens if Fire Doors Do Not Meet Regulations?

Non-compliant fire doors can compromise compartmentation, reduce protection for escape routes and increase the risk of injury during a fire.

Common problems include:

• Doors that fail to close correctly.
• Damaged or missing seals.
• Incorrectly fitted hinges and door hardware.
• Excessive gaps around door frames.
• Unapproved alterations.
• Inadequate maintenance.
• Doors wedged open without suitable automatic release arrangements.

Where breaches of fire safety legislation are identified, enforcement authorities may issue notices requiring improvements or take further action.

Serious offences can lead to prosecution and financial penalties.

The appropriate response depends on the nature of the defect, the risks present and the relevant statutory duties.

Building owners and responsible persons should therefore arrange appropriate inspections and remedial work rather than waiting until defects become serious.

Fire Safety With Adaston

At Adaston, we help organisations maintain effective passive fire protection systems through professional fire door installation, inspections and maintenance.

Our work supports building owners, landlords, contractors and facilities managers in identifying fire door defects, understanding compliance requirements and arranging appropriate improvements.

As a specialist passive fire protection company, we understand the importance of correct installation, suitable products and ongoing maintenance in protecting building occupants.

Whether you are reviewing existing fire doors, planning remedial works or managing fire safety across multiple properties, our experienced team can provide practical guidance and support.

Contact Adaston to discuss your fire door requirements and how we can help protect your building.