A fire door looks like any other door until the day it matters. Then the difference between a well-fitted doorset and a poor one can decide whether a stairwell stays clear of smoke long enough for people to escape. If your fire risk assessment or a recent inspection has flagged problem doors, you are probably weighing up quotes for fire door installation in London. Prices vary widely, and so does quality. This guide helps you make the right call: when to repair and when to replace, which rating you need, what a proper installation includes and how to keep doors compliant afterwards.
It is written for landlords, HMO owners, freeholders, managing agents and facilities managers responsible for buildings in London.
8 Signs Your Fire Door Needs Attention
You do not need to be an expert to spot most fire door problems. Walk your building and look for:
- A gap you can see light through around the sides or top of the door. A common guide is 2–4 mm; much wider and smoke can pass.
- A door that does not close on its own or stops short of the latch.
- Doors propped or wedged open, or closers that have been disconnected.
- Missing or painted-over seals in the edge of the door or frame.
- Loose, missing or mismatched hinges. Fire doors normally need at least three.
- Holes, cracks or splits in the leaf, or a frame that has come away from the wall.
- Ordinary glass, a cat flap or a letterbox added without the right fire-rated parts.
- No label or certification marker, so nobody can confirm it is a genuine fire door.
Any of these is a reason to arrange a professional check before an inspector or the London Fire Brigade finds it first.
Repair or Replace? Why a Fire Door Survey Comes First
The most expensive mistake is replacing doors that could have been fixed, or fixing doors that should have been replaced. A fire door survey in London settles the question before you spend money.
A surveyor inspects each door and records its condition, gaps, seals, hinges, closer, glazing, signage and any certification evidence. Each door then gets one of three outcomes:
| Outcome | When it applies | What usually happens next |
| Pass | Door and frame are sound and working | Keep on the regular inspection schedule |
| Repair | Doorset is genuine but has fixable faults, such as gaps, seals, closer or hinges | Remedial works on site, often in a single visit |
| Replace | Leaf or frame is badly damaged, unlabelled, altered or incompatible | New fire-rated doorset supplied and installed |
In many London buildings, a good share of failed doors can be brought back with remedial work. A survey also gives you a door schedule, which makes installation quotes easier to compare.
Anatomy of a Compliant Fire Doorset
A fire door is a system, not a single product. Its rating only holds if every part matches the tested specification:
- Door leaf – the fire-rated door itself, usually carrying a label or plug on the edge.
- Frame – must be compatible with the leaf and fixed securely to the wall.
- Intumescent strips – expand in heat to seal the gap between door and frame.
- Smoke seals – brush or blade seals that stop cold smoke (the “S” in FD30S).
- Hinges – fire-rated, usually three, correctly screwed in.
- Self-closer – pulls the door shut and into the latch from any open position.
- Latch, lock and handles – fire-rated and fitted with intumescent protection where needed.
- Glazing – tested fire-resisting glass in matching beads and seals.
- Fire stopping – sealant or packers closing the gap between frame and wall.
- Signage – “Fire door keep shut” or “Fire door keep locked” as appropriate.
Swap any one of these for an ordinary part and the whole doorset may no longer perform as rated.
Which Fire Door Rating Do You Need?
The rating for each door should come from your building’s fire strategy and fire risk assessment, not from guesswork. As a general guide for London properties:
| Where the door is | Rating commonly specified |
| Flat entrance door onto a communal corridor | FD30S |
| HMO bedroom and kitchen doors | FD30S |
| Communal corridor and stair doors in blocks | FD30S |
| Internal doors onto an escape route in a house conversion | FD30 or FD30S |
| Plant rooms, boiler rooms, electrical risers | FD30 or FD60, depending on the fire strategy |
| Commercial kitchens, stores and higher-risk areas | FD60 or FD60S |
When in doubt, confirm the rating before anything is ordered. A door that is under-specified will fail inspection, and one that is over-specified costs more than it needs to.
What Good Fire Door Installation Looks Like
When comparing installers, ask how they handle each of these. A good answer to every question is a strong sign of a competent contractor.
- Do they survey before quoting? Measurements, frame condition and wall construction should be checked first.
- Will they supply a certified doorset? Ask for the manufacturer and the evidence behind the rating.
- Will they follow the manufacturer’s instructions? Gaps, seals, hinges and fixings must match what the door was tested with.
- How do they treat the frame-to-wall gap? It should be fire-stopped with a suitable product, not filled with ordinary foam.
- Do they check the door on completion? Closing, latching, gaps and seals should be tested before handover.
- What paperwork do you get? Expect a record for each door with its location, rating, product details and photos.
- What fire door training does the team have? Ask about relevant training and experience, and check any scheme membership they claim on the scheme’s own register.
Safety Spectrum London’s fire door installation London service covers each of these steps, from survey and specification through to installation, final checks and completion records.
What Affects the Cost of Fire Door Installation in London?
There is no single price for a fire door because every opening is different. The main cost drivers are:
- Rating: FD60 doorsets cost more than FD30.
- Size: non-standard and made-to-measure doors, common in period London properties, cost more than standard sizes.
- Frame: reusing a sound, compatible frame is cheaper than replacing it.
- Finish: painted, veneered, oak or colour-matched finishes vary in price.
- Glazing and hardware: vision panels, panic bars, access control or hold-open devices add cost.
- Volume and access: multi-door programmes can lower the cost per door; restricted access or out-of-hours working can raise it.
The simplest way to get an accurate quote is to send your fire door inspection report, fire risk assessment findings or clear photos of each door and frame. If you have none of these, start with a fire door survey.
Keeping Fire Doors Compliant After Installation
A new fire door starts to wear from the first day. Hinges loosen, closers drift out of adjustment and seals get damaged. The law expects you to keep fire doors working, not just install them.
| Building | Minimum inspection frequency |
| Residential building with top storey above 11 m – communal fire doors | Every 3 months (Fire Safety (England) Regulations 2022) |
| Residential building with top storey above 11 m – flat entrance doors | Every 12 months, best endeavours |
| Other blocks, HMOs and commercial premises | As set by your fire risk assessment; every 6–12 months is common practice |
In multi-occupied residential buildings, residents must also be told that fire doors should be kept shut and not tampered with, and how to report faults.
Keep every inspection and repair record with your fire safety file. A planned fire door maintenance programme is usually cheaper than reacting to failed inspections.
Frequently Asked Questions
Can I fit a fire door myself?
It is not illegal, but it is risky. A fire door only performs as rated when fitted exactly to the manufacturer’s tested specification. Most landlords and managing agents use a competent installer so they have evidence the work was done correctly.
Can I keep my existing frame?
Sometimes. The frame must be sound, the right size and compatible with the new leaf. A survey will confirm whether it can stay.
Are flat entrance doors the leaseholder’s or the freeholder’s responsibility?
It depends on the lease. Either way, in multi-occupied buildings the Responsible Person must consider flat entrance doors in the fire risk assessment and take reasonable steps to make sure they are suitable.
How long does installation take?
A standard door usually takes a few hours to fit. Made-to-measure doors need extra time for manufacture.
What does a fire door survey in London involve?
A door-by-door inspection of condition, gaps, seals, hinges, closer, glazing and signage, with photos and a pass, repair or replace recommendation for each door.
Will I get paperwork after installation?
You should. Ask for a record of each door’s location, rating, product details and photos, and keep it with your fire safety file. A fire door certificate can also be arranged.
Get Expert Help with Fire Doors in London
Safety Spectrum London surveys, repairs, supplies and installs fire doors for flats, HMOs, managed blocks and commercial buildings across London and the M25. We assess first, recommend repair where it is enough, and replace only where it is needed. Every job ends with clear completion records for your fire safety file.
- Fire door installation London: see the service
- Fire door survey London: book a survey
- Call: +44 20 4628 6504
- Email: info@safetyspectrumlondon.co.uk
Send us your inspection report, fire risk assessment or photos of your doors, and we will come back with a clear scope and quote.
