A new fire door costs roughly £150–£400, while a standard internal door is £30–£80, the difference reflects the mandatory fire-resistance certification.
If you are replacing an internal door in a UK home, you may wonder whether a standard door will suffice or if a fire-rated door is required. The price gap is significant, and the decision depends on where the door is located and what building regulations apply.
Fire doors are certified to resist fire for a set period, typically 30 or 60 minutes, and must be installed as a complete assembly including the frame, hinges, and seals. This certification adds to the cost, with a basic FD30 fire door starting around £150 and rising to £400 for a finished, pre-hung model, according to the Energy Saving Trust’s 2026 fire door cost guide (Energy Saving Trust, 2026).
The price depends on the door material, fire rating, and whether it comes pre-assembled with the necessary intumescent seals and self-closing device. A standard internal door without fire certification typically costs between £30 and £80.
Fire doors UK regulations 2026 require a minimum of FD30 rating in most domestic buildings
In England and Wales, the 2026 edition of Approved Document B sets out the legal requirements for fire doors in dwellings. All new-build homes and flats must have FD30-rated doors on every habitable room that leads to a communal area or an escape route (GOV.UK, Approved Document B, Volume 1: Dwellings, 2026).
Existing homes that undergo a loft conversion or a material change of use, such as converting a garage into a living space, must upgrade doors on the escape route to FD30. This applies to doors at the top of stairs and any door leading from a habitable room into a hallway or landing.
Fire doors must be fitted with self-closing devices attached to the door leaf, not just the frame. The manufacturer’s certification will specify the correct type of closer and hinge. If you install a door without the certified closer, the door does not meet building regulations.
Quick numbers cost, rating, and certification data for fire doors UK
| Rating | Typical cost (GBP) | Typical core material | Common use | Mandatory certification |
|---|---|---|---|---|
| FD30 | £150 – £400 | Timber (solid core) | Domestic (houses, flats) | BS 476-22 or BS EN 1634-1 |
| FD60 | £250 – £600 | Composite or timber | Commercial, high-risk domestic | BS 476-22 or BS EN 1634-1 |
| FD90 | £400 – £1,000+ | Steel or composite | High-risk commercial, industrial | BS 476-22 or BS EN 1634-1 |
| FD120 | £600 – £1,500+ | Steel | Specialist (e.g., plant rooms) | BS 476-22 or BS EN 1634-1 |
Costs are based on the 2026 DESNZ fire door cost guide and MCS register data (MCS register, 2026). Prices exclude installation labour, which typically adds £50–£150 per door depending on the complexity of the frame and wall construction.
The direct answer fire doors UK are mandatory in certain domestic situations, not every home
In a standard two-storey house built before 2006, fire doors are not required unless a loft conversion or extension creates an additional storey or alters the escape route. Building regulations only apply when you carry out work that changes the layout or fire safety of the home (GOV.UK, Approved Document B, Section 2.9).
For flats or maisonettes, fire doors are mandatory on all doors leading to communal hallways or stairs, regardless of the build date. This applies to both new and existing flats. If you own a leasehold flat, the freeholder or managing agent may require fire doors as part of the building’s fire risk assessment.
If you are unsure whether your home requires fire doors, check with your local building control office or a qualified fire risk assessor. The requirement depends on the property type, number of storeys, and whether any recent building work has been carried out.
How to verify a fire door installer MCS certification and third-party accreditation
For fire door installation in the UK, the installer must hold a valid certificate from a UKAS-accredited third-party scheme, such as BWF-Certifire or FIRAS. These schemes audit the installer’s work to ensure it meets the fire-resistance standard of the door assembly (BWF Fire Door Alliance, Third-Party Certification Scheme, 2026).
Check the installer’s registration on the MCS register if the fire door is linked to a heat-pump or biomass system, or on the BWF-Certifire database directly. You can also search the FIRAS register on the Warringtonfire website. Without third-party certification, the installation may not be accepted by building control or your home insurer.
Always ask the installer for their certificate number and verify it online before work begins. A certified installer will also provide a completion certificate that records the door rating, test standard, and components used.
Fire door ratings explained FD30, FD60, and what the numbers mean for your home
FD30 means the door assembly, including the leaf, frame, seals, and hinges, must resist fire for 30 minutes when tested to BS 476-22 or BS EN 1634-1. FD60 provides 60 minutes of resistance. These ratings are based on the complete door assembly, not just the door leaf (Approved Document B, 2026).
Domestic fire doors are typically FD30. This rating is sufficient for most escape routes in houses and flats up to four storeys high. FD60 is used in commercial buildings, high-risk areas such as boiler rooms, or garages attached to a dwelling where the garage shares a wall with a habitable room.
If you install a door with a higher rating than required, for example, FD60 instead of FD30, it is acceptable as long as the door assembly is certified to that rating. However, a lower rating than required is not permitted. how to choose the right fire door rating for your home
Essential fire door components intumescent seals, self-closers, and hinges
Intumescent seals are strips fitted into the door frame or door edge that expand when heated to block gaps around the door. They must be installed exactly as the manufacturer specifies. If the seal is omitted or fitted incorrectly, the door will not achieve its certified fire resistance (Building Regulations Approved Document B, Section 5.8, 2026).
Self-closing devices, such as overhead closers or concealed spring hinges, are mandatory on all fire doors in communal areas and escape routes. The closer must be listed in the door’s certification documentation. Using a generic closer from a different manufacturer voids the certification.
Hinges must be fire-rated and certified as part of the door assembly. Standard hinges may soften or fail under fire conditions. Always use the hinges supplied with the door or listed in the manufacturer’s installation instructions.
Buying a fire door UK what to check on the label and in the product literature
Every fire door sold in the UK must carry a permanent label or stamp showing the manufacturer, fire rating (e.g., FD30), and test standard (BS 476-22 or BS EN 1634-1). This label is usually located on the top or side edge of the door leaf (BWF Fire Door Alliance, Buying Guide 2026).
Ensure the door is supplied with a matching frame, hinges, and seals. Mixing components from different manufacturers voids the certification. Some suppliers sell pre-hung doors with the frame already fitted, which simplifies installation and guarantees compliance.
If you buy a fire door online or from a builder’s merchant, ask for a copy of the test certificate or third-party certification document. Keep this with your building control paperwork. Without it, your local authority may reject the installation during inspection. fire door maintenance and inspection checklist
Frequently Asked Questions
A fire door is a certified door assembly that resists fire for 30 or 60 minutes. According to the Energy Saving Trust's 2026 guide, it must include the frame, hinges, intumescent seals, and a self-closing device to meet UK regulations.
A basic FD30 fire door costs around £150, rising to £400 for a finished pre-hung model. The Energy Saving Trust's 2026 cost guide confirms this range, which is 2-5 times more than a standard internal door at £30–£80.
Yes, if you live in a new-build home or flat, or if you are doing a loft conversion or material change of use. GOV.UK's Approved Document B 2026 requires FD30 doors on escape routes and habitable rooms leading to communal areas.
A fire door has certified fire resistance (30 or 60 minutes) and includes intumescent seals, a self-closing device, and specific hinges. A normal door lacks these features and costs £30–£80 instead of £150–£400.
You can fit a fire door yourself, but it must be installed as a complete certified assembly. The manufacturer's certification specifies the correct closer and hinge type. Incorrect installation can invalidate the fire rating and breach building regulations.
