Fire Door Costs UK — What to Charge for Fire Door Supply and Fit in 2026

Fire Door Supply-Only Costs — UK 2026

These are trade supply prices for the door leaf or doorset only, before any installation labour. Prices vary by specification, certification mark, finish, and whether you are buying a door leaf alone or a complete doorset (door and frame pre-hung). Always source from a supplier whose products carry third-party certification — BWF-CERTIFIRE or BM TRADA Q-Mark are the two recognised UK schemes. Uncertified fire doors create significant liability if an installation is ever audited or an incident occurs.

Supply prices are trade rates for BWF-CERTIFIRE or BM TRADA Q-Mark certified products, 2026 UK market. Retail/builder's merchant prices are typically 20–40% higher. Architectural veneers, painted finishes, and bespoke sizing add cost at upper end of each range.

Buying doorsets rather than door leaves into site-made frames has become the preferred approach on commercial and managed residential work. A pre-hung doorset with factory-fitted intumescent strips and documented certification is significantly easier to record in the building's fire door register, and it removes uncertainty about frame compatibility. The higher upfront cost is generally justified on contracts where you are responsible for compliance sign-off.

Fire Door Installation (Fit-Only) Labour Rates — UK 2026

These are labour-only rates where the door or doorset is supplied by the client or builder. Fire door fitting carries a meaningful premium over standard door hanging because of the gap tolerance requirements, the need to fit and check intumescent and smoke seal components, the door closer installation and adjustment, and the record-keeping obligations that come with compliant installation. A fire door is not simply a heavier door — it is an assembly that must perform to a tested specification, and the installation must reflect that.

Fire door inspection work has become a significant revenue stream since the Building Safety Act 2022. Responsible persons in higher-risk buildings must carry out quarterly checks on fire doors in communal areas and annual inspections of flat entrance doors. For a carpenter or joiner with fire door knowledge, offering an inspection service to managing agents — even without FDIS registration — generates recurring revenue and leads directly to remediation work on doors that fail inspection.

Fire Door Supply and Fit — Total Job Costs in 2026

These are realistic all-in costs for supply, fitting, and the required ancillary components (intumescent strips, smoke seals, door closer, hinges). They do not include additional items such as locks, vision panel glazing, or architectural hardware — those should be quoted separately.

On volume contracts — an HMO with 12 bedroom doors, or a block of flats with 40 flat entrance doors — it is standard practice to agree a schedule rate per door rather than quoting each door individually. The rate reflects your buying power on materials at volume and the efficiency of doing multiple doors in one mobilisation. A typical schedule rate for FD30 bedroom door supply and fit on an HMO might be £280–£350 per door all-in, compared to £400–£600 for a single standalone door. Make the volume discount explicit in your tender — it demonstrates commercial awareness and makes it harder for a managing agent to split the work across multiple contractors.

Fire Door Components — What Must Be Certified and Recorded

A fire door is not a single product — it is an assembly. Every component in that assembly must be compatible with the door rating, and the full installation must comply with BS 8214:2016 (Code of practice for fire door assemblies). The building owner is required to maintain a fire door register recording the certification details of every installed fire door assembly. As the installer, you must provide that information — which means you need to record and document every component at the time of installation.

The door leaf

Must carry third-party certification — BWF-CERTIFIRE or BM TRADA Q-Mark are the two main UK schemes. The certification label is typically on the top edge of the door. Do not remove it. Photograph it before hanging. Record the product name, batch number, and certification mark in your installation record. An uncertified door leaf — however solid it feels — is not a compliant fire door, and using one exposes both you and the building owner to liability.

The frame

The frame must be rebated (not a plain lining), the correct depth for the door specification, and — for a doorset installation — it must be the frame tested with that specific door leaf. Mixing frames and doors from different manufacturers' test evidence is technically non-compliant unless the combination has been separately tested or assessed. In practice, most reputable manufacturers provide guidance on compatible third-party components; always check before mixing products.

Intumescent strip and smoke seal

Intumescent strips must be the correct rating for the door specification — an FD30 strip cannot be used on an FD60 door. They must be fitted in the rebate of the frame (not the door edge) unless the test evidence specifies otherwise. Cold smoke seals (brush or foam) are required in addition to intumescent strips in HMOs, purpose-built flats, and most commercial escape routes. Both strips and seals must be mitred at the corners for a clean, continuous seal. Gap between the intumescent and the door face: 0mm — the strip must be seated flush.

Door closer

Every fire door on an escape route must be self-closing. The closer must be CE marked to EN 1154, and the closing force must be appropriate for the door weight and width — typically EN size 2–4 for standard residential fire doors, EN 4–6 for heavier commercial doors. The closer must pull the door fully shut from any position — a closer that leaves a 20mm gap at the latch is not compliant. Test it on every door before signing off. Concealed overhead closers are acceptable; floor-spring closers are acceptable; hold-open devices linked to the fire alarm system are acceptable on escape routes where a permanently closed door would impede daily movement (care homes, schools).

Hinges

A minimum of three hinges per fire door is required — two hinges are not compliant. Hinges must be CE marked to EN 1935. For FD60 doors and heavier solid core FD30 doors, four hinges are typically specified. Hinges must be the correct size and weight rating for the door — a 100mm × 76mm hinge on a heavy FD60 door is insufficient. Use the manufacturer's test evidence or product specification to confirm the correct hinge specification for the door you are installing.

Hardware (handles, locks, letterboxes)

Lever handles, locks, and any other hardware fitted to a fire door must be compatible with the door's test evidence. Most reputable hardware manufacturers publish fire door compatibility data. Where a lock or latch is fitted, the mortice must not compromise the integrity of the door leaf — which means staying within the dimensions shown in the door's test data. Letter boxes in fire doors require a fire-rated letter plate with intumescent lining. Vision panel glazing must be fire-rated glass with an intumescent seal — standard float glass is not acceptable.

Gap tolerances (BS 8214:2016)

This is where most fire door failures occur in practice. The allowable gaps between the door leaf and the frame are tightly specified: latch side and hinge side — 2mm to 4mm. Head (top of door) — 2mm to 4mm. Bottom gap (to threshold or floor finish) — maximum 8mm for FD30 where no threshold seal is fitted, or 3mm for FD60. A fire door with a 6mm gap on the hinge side will not achieve its rated resistance in a fire, regardless of all other components being correct. Check every gap with feeler gauges or a calibrated gap gauge before completing the installation.

Where Fire Doors Are Legally Required in UK Buildings

Understanding where fire doors are required — and under which regulation — matters for quoting correctly. It also means you can spot non-compliant situations when you are on site for other work, which creates legitimate, low-pressure opportunities to flag a compliance issue and offer a solution.

Dwellings — between integral garage and house

One of the most commonly missed requirements in domestic work. The door between an attached or integral garage and the habitable dwelling must be a minimum FD30 self-closing fire door. This applies to existing homes, not just new builds. Homeowners regularly replace this door with a standard internal door when renovating — often entirely unaware it requires fire rating. When you are quoting for door replacement in a property with an integral garage, always check this door. Raising it as a compliance issue (not as a sales opportunity) is the professional approach.

New dwellings — floors above or below habitable basement

Approved Document B (Volume 1, Section 2) requires fire doors between floors in new dwellings where the building has more than two storeys, or where a basement contains a habitable room. Building control will require evidence of compliance on completion — a fire door with its certification label intact and a compliant installation.

HMOs — Houses in Multiple Occupation

HMO licensing conditions are set by local authorities but virtually all require fire doors on every room leading to the means of escape — typically all bedroom doors, kitchen door, and any communal living room. The fire door must be self-closing. In practice this means an overhead closer on every bedroom door, which many HMO landlords resist on cost grounds. Explain that it is a licensing condition, not an optional recommendation, and that a licence renewal inspection will identify non-compliant doors. Offer a volume rate for doing all the doors in one visit.

Purpose-built flats

Every flat entrance door (the door between the flat and the common parts) must be a fire door — minimum FD30 with smoke seal. Common area doors — between stairwells, lobby doors, doors to plant rooms — must also be fire-rated. This is the largest volume of fire door remediation work created by the Building Safety Act 2022, particularly in buildings that were not well-maintained under previous ownership or management.

Commercial buildings

Approved Document B (Volume 2) requires fire doors on all escape routes, at stairwells, at plant rooms, at lift shafts, and between compartments in larger buildings. The fire rating required depends on the compartment size and building height. Commercial fire door work is typically specified by a fire engineer as part of the building's fire strategy document — the installer needs to work to that specification, not determine it independently.

Building Safety Act 2022 — How It Has Changed the Fire Door Market

The Building Safety Act 2022, introduced in response to the Grenfell Tower inquiry, created new legal duties for 'responsible persons' — landlords, managing agents, and building owners — in relation to fire doors in higher-risk buildings (those over 18 metres or 7 storeys, containing at least two residential units).

Quarterly and annual inspection requirements

Responsible persons in higher-risk buildings must now carry out quarterly checks on fire doors in communal areas (checking that closers are functioning, seals are intact, gaps are within tolerance, and that the door is undamaged) and annual inspections of flat entrance fire doors. These are not full certification inspections — they are condition checks — but they require someone with knowledge of fire door requirements to carry them out meaningfully. This has created a significant market for fire door inspection services from qualified carpenters and joiners.

For a joiner working in residential property maintenance, offering a fire door inspection and condition report service to managing agents is a natural extension. A block of 30 flats with quarterly communal checks and annual flat door inspections is a recurring contract worth £3,000–£8,000 per year, before any remediation work. Remediation on doors that fail inspection — typically replacing closers, resealing strips, adjusting gaps, or replacing severely damaged doors — is then straightforward additional revenue from an existing client.

Fire door register obligations

Building owners are required to maintain a fire door register — a record of every fire door in the building, its specification, certification details, and installation and inspection history. As the installer, you are responsible for providing the documentation that goes into that register: the certification mark and batch number of the door leaf, the intumescent and smoke seal products used, the closer specification, hinge specification, and the date of installation. Photograph the certification label on every door before hanging it. Record all component details on your installation sheet. Hand a copy to the client and keep one yourself. This is not additional work — it takes 10 minutes per door — and it is the mark of a professional fire door installer.

Fire Door Safety Week

Fire Door Safety Week (held annually each September) has raised public and landlord awareness of fire door compliance significantly over the past several years. Managing agents and landlords who might previously have deferred fire door maintenance are now more likely to commission inspections proactively. This is a useful prompt for follow-up marketing to existing clients — a short message in August or September noting that you offer fire door inspection and remediation services often generates responses from landlords who know they have a compliance obligation but have not yet acted on it.

Accreditation for Fire Door Installers — FDIS and BM TRADA Q-Mark

Two main third-party certification schemes exist for fire door installers in the UK. Neither is legally mandatory to install fire doors — a competent carpenter can install fire doors without scheme membership — but registration is increasingly required or strongly preferred by managing agents, housing associations, local authorities, and specifiers on commercial projects.

FDIS — Fire Door Installation Scheme (BWF-CERTIFIRE)

The FDIS scheme, operated by the British Woodworking Federation under the CERTIFIRE umbrella, assesses and registers fire door installers who can demonstrate competence in compliant installation. Membership involves a technical assessment, a site audit, and ongoing CPD. FDIS-registered installers can self-certify their installations and issue a certificate of conformity that forms part of the building's fire door register. Registration costs are in the range of £500–£1,500 per year depending on business size. For a joiner doing significant volumes of HMO, flat, or commercial fire door work, it is a straightforward commercial decision — registered status opens tenders and contracts that are otherwise unavailable.

BM TRADA Q-Mark for fire door installation

The BM TRADA Q-Mark certification for fire door installation is the other major scheme. It operates similarly — technical competence assessment, site inspection, certification — and is recognised by the same specifiers and procuring organisations. Some contracts specify Q-Mark; others specify FDIS; most accept either. If you are pursuing commercial or housing association fire door contracts, check which scheme the procurer recognises before choosing which to join.

Is accreditation worth it?

The question to ask is: what contracts are you currently losing because you are not registered? If you are doing domestic and small HMO fire door work and winning it on reputation and price, accreditation may not change your immediate pipeline. If you are bidding for housing association framework contracts, local authority maintenance contracts, or commercial fit-out fire door packages, you will find that registration is a pre-qualification requirement in most tender documents. At that point it is not optional — it is the entry ticket to the market you want to be in.

Quoting Fire Door Jobs — How to Survey, Structure, and Protect Yourself

Fire doors are not a job to quote blind. Every fire door installation involves variables that can only be assessed on site, and quoting without a survey leads to either underpricing (if the frame is out of specification, the opening is non-standard, or access is difficult) or overpricing (if you build in large contingency to cover unknown conditions). Always survey before quoting on any fire door job of more than two doors.

What to check on a fire door survey

• Frame condition and specification: is the existing frame rebated? Is it the correct depth? Is it square and plumb? A plain lining cannot be used for a fire door — it needs a rebated frame, and if the existing frame is not rebated, you need to either fit a new frame or a planted stop (which requires assessment against the door's test evidence).
• Opening size: measure width and height of the opening, not the existing door. Fire doors come in standard sizes — if the opening is non-standard, you need a door made to size (longer lead time, higher cost) or the opening needs to be adjusted. Identify this before quoting.
• Existing hardware: what closer is currently fitted? What hinges? If they are non-compliant (fewer than three hinges, non-CE-marked closer), they need replacing — quote for this explicitly.
• Access: on a block of flats, the number of doors on each floor and the access arrangements (lift availability, stairwell width for doorset delivery) affect how efficiently the work can be done. Ten doors on the eighth floor without a service lift is a different logistical proposition to ten doors on the ground floor.
• Number of doors and proximity: volume discounts are appropriate for multiple doors in one building — your mobilisation cost is the same whether you are doing two doors or twelve, and you can negotiate better material pricing on larger quantities.

Quote per doorset, not per hour

For fire door work, always quote per doorset or per door, not per day or per hour. A fixed-price-per-door approach protects you if a door takes longer than expected (non-standard frame, access issues, difficult masonry walls), and it means your efficiency is your own reward — if you install eight doors cleanly in a day rather than six, the extra productivity improves your margin rather than creating a conversation with the client about pace. Per-hour quoting on fire door work also creates ambiguity about compliance time — the time you spend checking gap tolerances, fitting seals correctly, and photographing the certification label is essential work, not something to be hurried because the clock is running.

Document everything

For every fire door installation, keep the following records: the certification label information from the door leaf (BWF-CERTIFIRE or Q-Mark certificate number, product name, batch number), the intumescent and smoke seal product names and manufacturers, the closer model and EN strength rating, the hinge specification, the date of installation, and the building address and door location. Photograph the certification label before hanging, and photograph the completed installation showing the closer, the gap at head and latch side, and the seal condition. Provide a copy of this record to the client as an installation certificate — this is what goes into the fire door register, and it demonstrates that you are a professional who understands the obligations involved. Most residential joiners doing fire door work do not provide this — doing so differentiates you immediately.

Pricing your markup on materials

If you are supplying the fire doors and components, apply a 15–20% markup on your trade cost for standard materials, and 10–15% on high-value doorsets where the margin in percentage terms still represents a meaningful sum. Your markup covers sourcing time, carrying the cost before payment, managing returns or incorrect deliveries, and the commercial risk of buying materials that turn out to be wrong for the job. On a £600 doorset at 15% markup, that is £90 — fair for the work involved. Do not apologise for material markup; it is a standard and legitimate part of any supply-and-fit quote.

Fire Door Installation Is a Growing Market — Track Where Your Jobs Are Coming From

The fire door remediation market has grown significantly since the Building Safety Act 2022, and demand from managing agents, housing associations, and landlords is consistent. But like most compliance-driven trade work, the jobs tend to cluster around a small number of recurring clients — a managing agent who instructs you on multiple blocks, a property maintenance company with a portfolio of HMOs, a local authority framework. The challenge is identifying which of your existing relationships are generating this kind of high-value repeat work, and which referral sources are bringing in one-off jobs that do not develop into anything more.

Most joiners doing fire door work cannot answer these questions: which lead source generates their highest-value contracts? What is the average job value from a managing agent referral versus a domestic homeowner? Which of their current clients is most likely to refer them on to another building?

Trade2Base tracks the source of every enquiry through to job completion and payment, so over time you can see which channels — managing agent referrals, Google, previous customer recommendations, trade directories — are generating your most valuable fire door work. That information tells you where to invest your relationship-building time and where to focus any marketing spend, rather than spreading effort evenly across channels that return very different results.