Collection: Internal Fire Doors

Internal fire doors are available in several configurations depending on fire resistance period, construction material, glazing requirements, and security needs. All compliant doors must be tested to BS EN 1634-1 and supplied as certified door sets.

By Fire Resistance Rating

• FD30 Fire Doors
  Provide a minimum of 30 minutes of fire resistance. Commonly used in residential buildings, offices, and protected corridors.
• FD60 Fire Doors
  Provide 60 minutes of fire resistance and are typically specified in higher-risk or larger commercial buildings.
• FD90 and FD120 Fire Doors
  Offer 90 or 120 minutes of protection and are used in industrial buildings, plant rooms, and areas requiring extended compartmentation.

Steel Internal Fire Doors

Manufactured from steel with a fire resistant core, steel fire doors provide enhanced durability and are often specified for:

• Plant rooms
• Service risers
• Industrial environments
• High traffic areas

Glazed Fire Doors

Internal fire doors can incorporate fire rated glazing panels to improve visibility and light transmission while maintaining certified fire resistance.

Fire and Smoke Control Doors

Some internal fire doors are also specified with smoke seals (FD30S / FD60S) to restrict cold smoke movement, improving protection of escape routes.

Security Rated Fire Doors

Where both fire resistance and enhanced security are required, internal fire doors can be supplied with additional security ratings ie; PAS24 and LPS1175, provided they remain compliant with fire certification.

Single and Double Door Sets

Available as:

• Single leaf doors for standard openings
• Double leaf doors for wider corridors and high-occupancy routes

Each internal fire door must be supplied and installed as a certified door set, including frame, seals, hinges, glazing (if fitted), and hardware, to ensure compliance both now and under future fire safety regulations.

Internal fire rated doors can be tailored to suit building layout, aesthetic requirements, and functional needs, while maintaining certification to BS EN 1634-1. All customisation must remain within the scope of the tested and approved door set specification.

Fire Resistance Rating

Doors can be specified to provide:

• FD30 (30 minutes)
• FD60 (60 minutes)
• FD90 / FD120 (where required)

Where smoke control is needed, doors can be specified as FD30S or FD60S with integrated smoke seals.

Finish and Appearance

Powder coated finishes in a wide range of colours.

Glazing Options

Internal fire doors can include certified fire rated glazing panels to improve visibility and light flow.

Options include:

• Vision panels (various shapes and sizes)
• Full or partial glazed configurations (subject to certification limits)
• Clear or patterned fire-rated glass

All glazing must comply with the tested fire door configuration.

Door Configuration

• Single leaf doors
• Double leaf doors
• Overpanels or side panels (where tested and approved)

Door sets are manufactured to measure to suit the opening.

Ironmongery and Hardware

Customisable hardware options include:

• Lever handles and escutcheons
• Panic hardware (where part of an escape route)
• Door closers (overhead or concealed)
• Electromagnetic hold open devices (connected to fire alarm systems)
• Access control integration

All hardware must be approved for use with the certified door set.

Smoke Seals and Thresholds

• Intumescent seals
• Combined fire and smoke seals

Drop seals or threshold seals where required

Security Enhancements

Where additional protection is required, doors can include reinforced cores, upgraded locking systems, or security rated specifications, provided fire certification is maintained.

Accessibility Considerations

Customisation can include:

• Low thresholds
• Clear opening width compliance
• Automatic door operators (where compatible with fire safety strategy)

It is essential that any design or hardware selection remains within the manufacturer’s tested scope to ensure ongoing compliance with fire regulations, including evolving post-2029 requirements.

Internal steel fire doors are specified where robust fire compartmentation and long term durability are required. They are commonly used in commercial, industrial, and public buildings where higher traffic levels or more demanding environments make steel construction preferable to timber.

Industrial and Manufacturing Facilities

Steel fire doors are widely installed in:

• Production areas
• Workshops
• Warehouses
• Loading corridors

They help maintain fire separation between operational zones and storage areas while withstanding heavy use.

Plant Rooms and Service Risers

Internal steel fire doors are ideal for:

• Boiler rooms
• Electrical intake rooms
• Mechanical plant rooms
• Lift motor rooms

Their durability and resistance to impact make them suitable for service environments.

Commercial Buildings

In offices and multi occupancy buildings, steel fire doors are often fitted in:

• Protected corridors
• Stairwells
• Escape routes
• Back of house service areas

They help preserve compartmentation and protect evacuation routes.

Schools and Public Buildings

Steel fire doors are specified in:

• Sports halls
• Maintenance areas
• Kitchens and service corridors

Their strength makes them suitable for high traffic public settings.

Healthcare and Care Facilities

In hospitals and care environments, steel fire doors are used to separate:

• Clinical areas
• Storage rooms
• Plant spaces

They support strict fire safety strategies while offering durability.

High Security Internal Areas

Where enhanced protection is required alongside fire resistance, steel fire doors may be specified for:

• Secure storage rooms
• IT or server rooms
• Controlled access areas

Internal steel fire doors are chosen where certified fire resistance to BS EN 1634-1, durability, and long service life are critical to maintaining safe compartmentation and regulatory compliance.

Internal steel fire doors provide certified fire resistance combined with high durability, making them well suited to commercial, industrial, and high-traffic environments.

Certified Fire Resistance

Tested to BS EN 1634-1, internal steel fire doors provide defined periods of fire resistance such as FD30, FD60, FD90, or FD120. This helps maintain compartmentation and protect escape routes in line with Building Regulations.

Robust Steel Construction

Manufactured from steel with a fire resistant core, these doors offer superior strength compared to standard timber doors. They are highly resistant to impact, wear, and heavy daily use.

Smoke Control Capability

Where specified as FD30S or FD60S, internal steel fire doors include integrated smoke seals to restrict cold smoke movement and improve occupant safety during evacuation.

Enhanced Security

Steel construction provides improved resistance to forced entry. Security upgrades or certified security ratings can be specified where required, while maintaining fire compliance.

Low Maintenance and Long Service Life

Steel fire doors are designed for durability in demanding environments such as plant rooms, workshops, and service corridors, reducing long-term maintenance costs.

Hygienic and Easy to Clean

Powder coated steel finishes are easy to clean and maintain, making them suitable for healthcare, education, and food related environments.

Compatible with Access Control

Internal steel fire doors can be integrated with:

• Electromagnetic hold-open devices
• Access control systems
• Door closers and panic hardware

All hardware must remain within the tested certification scope.

Supports Ongoing Compliance

Supplied as complete certified door sets, internal steel fire doors help ensure compliance with current fire safety regulations and evolving post-2029 requirements.

These features make internal steel fire doors a durable, compliant, and practical solution for buildings requiring robust fire compartmentation and long-term reliability.

Internal steel fire doors are life safety components and must comply with fire testing standards, Building Regulations, and correct installation practices to ensure they perform as intended during a fire.

Fire Test Certification – BS EN 1634-1

Internal steel fire doors must be independently tested to BS EN 1634-1. Certification confirms the door’s fire resistance performance for defined periods such as:

• FD30 (30 minutes)
• FD60 (60 minutes)
• FD90 / FD120 (where specified)

The complete door set: including leaf, frame, hinges, glazing (if fitted), seals, and hardware - must match the tested specification.

Smoke Control (Where Required)

Where smoke control is part of the fire strategy, doors must be specified as FD30S or FD60S and fitted with approved intumescent and smoke seals to restrict cold smoke movement.

Building Regulations – Approved Document B

Internal steel fire doors must align with Approved Document B (Fire Safety) and the building’s fire strategy. This includes:

• Correct fire resistance period
• Installation within designated compartment walls
• Protection of escape routes and stairwells

Installation to Certified Detail

Installation must follow the manufacturer’s tested details, including:

• Approved frame fixing methods
• Correct gap tolerances
• Approved ironmongery
• Compatible door closers and hardware

Deviating from certified details can invalidate the fire rating.

Self-Closing Devices

Most internal fire doors must be fitted with an approved self closing device to ensure the door returns to the closed position after use, maintaining compartment integrity.

Ironmongery Compliance

All hinges, locks, handles, closers, glazing systems, and access control components must be:

• Fire-rated
• Approved for use with the certified door set
• Installed in accordance with the test evidence

Integration with Fire Alarm Systems

Where hold open devices are used, they must be connected to the fire alarm system and release automatically upon activation.

Ongoing Inspection and Maintenance

Internal steel fire doors must be inspected regularly to ensure:

• Doors close fully and latch correctly
• Seals remain intact
• No damage affects fire performance
• Hardware operates smoothly

Regular inspection is a requirement under fire safety legislation and building management obligations.

When correctly specified, installed, and maintained, internal steel fire doors provide compliant fire compartmentation and reliable long-term life safety performance, supporting both current regulations and evolving post-2029 compliance standards.

Internal steel fire doors must be installed and maintained strictly in accordance with their certified test evidence to ensure they perform correctly in the event of a fire. Because they are life safety products, both installation quality and ongoing inspection are critical.

Installation Requirements

Install as a Complete Certified Door Set

Internal steel fire doors must be installed as a fully certified door set, including:

• Door leaf
• Steel frame
• Intumescent (and smoke) seals
• Approved hinges
• Lock and latch
• Door closer
• Glazing system (if applicable)

All components must match the tested specification under BS EN 1634-1.

Correct Structural Fixing

The frame must be securely fixed into a suitable fire rated wall construction (masonry, steel stud, or concrete) using the approved fixing method and spacing. Incorrect fixings can compromise fire integrity.

Gap Tolerances and Alignment

Clearances between the door leaf and frame must fall within certified tolerances. Excessive gaps can invalidate the fire rating. The door must be:

• Plumb and square
• Smooth in operation
• Free from binding or distortion

Self-Closing Device Installation

A compliant door closer must be fitted and correctly adjusted to ensure the door fully closes and latches every time. Fire doors must not be wedged open.

Glazing and Hardware Compliance

Any vision panels, locks, handles, access control systems, or hold open devices must be approved for use within the certified door set and installed exactly as per the manufacturer’s instructions.

Fire Alarm Integration (Where Applicable)

If electromagnetic hold open devices are used, they must be connected to the fire alarm system and release automatically upon activation.

Supply Only Installation

Supply-only internal steel fire doors may be provided for competent contractors; however:

• Accurate measurements are essential
• Installation must strictly follow certified details
• Responsibility for compliance remains with the installer and building operator
• For higher risk or public buildings, professional installation is strongly recommended.

Maintenance Requirements

Routine Inspection

Internal steel fire doors should be checked regularly to confirm:

• The door closes fully and latches correctly
• Intumescent and smoke seals are intact
• Hinges and fixings are secure
• No damage affects the door leaf or frame

Periodic Servicing

In commercial buildings, routine fire door inspections should be carried out at least annually, or more frequently in high traffic environments. Servicing may include:

• Adjusting door closers
• Replacing worn seals
• Tightening hardware
• Checking latch engagement

Ongoing Compliance

Fire doors must be included in the building’s fire risk assessment and ongoing safety management plan. Any damage, unauthorised modification, or removal of certified components can invalidate fire performance.

When correctly installed and properly maintained, internal steel fire doors provide durable, compliant fire compartmentation that supports long-term life safety and regulatory requirements.

The cost of internal steel fire rated doors depends on fire resistance period, size, configuration, glazing, hardware specification, and installation requirements.

The prices below provide a general budgeting guide for commercial projects.

FD30 Internal Steel Fire Doors (30 Minute Rating)

Suitable for offices, corridors, and standard compartment walls.

• Supply only: From £750 – £1,200
• Supplied and installed: From £1,200 – £1,800

FD60 Internal Steel Fire Doors (60 Minute Rating)

Commonly specified for higher-risk commercial and industrial buildings.

• Supply only: From £900 – £1,500
• Supplied and installed: From £1,500 – £2,400

FD90 / FD120 Steel Fire Doors

Used in plant rooms, service risers, and areas requiring extended fire resistance.

• Supply only: From £1,200 – £2,000
• Supplied and installed: From £2,000 – £3,500+

Glazed Internal Steel Fire Doors

Including certified fire-rated vision panels.Add approximately £300 – £800 depending on glazing size and specification.

Fire and Smoke Rated (FD30S / FD60S)

Where smoke seals are required, expect an additional £100 – £300 depending on configuration.

Security Upgrades (Where Required)

Security-rated or reinforced internal steel fire doors may range from:

£2,500 – £5,000+ installed, depending on certification level.

What Affects Final Pricing

• Fire resistance period (FD30, FD60, FD90, FD120)
• Single or double leaf configuration
• Glazing specification
• Ironmongery and closer specification
• Access control integration
• Structural preparation requirements
• Installation access and site conditions

Getting an Accurate Quote

Because internal steel fire doors must be supplied and installed as certified door sets to comply with BS EN 1634-1, detailed measurements or a site survey are recommended. This ensures the correct fire rating, hardware specification, and installation method to maintain compliance both now and under evolving post-2029 regulations.