Doors, seals & hardware
Fire Door Hinges & Ironmongery
Fire Door Hinges & Ironmongery: Fire door ironmongery is the hardware on a fire door, hinges, latches, locks, handles, closers, letter plates and spy holes, which must be suitable for use on fire doors so it does not create a weak point when the door is exposed to fire.
Hardware changes are where many good fire doors are spoiled: a lightweight hinge, a lock with an oversized mortice, a cheap letter plate or an extra bolt drilled through the leaf. We replace hardware with items that have fire test evidence for the door type and fit them without cutting the leaf beyond what that evidence allows.
What's included?
- Hinges suitable for fire doors, usually at least three per leaf
- Latches, sashlocks and deadlocks with intumescent protection where needed
- Fire-rated letter plates and spy holes for flat entrance doors
- Pull handles, push plates and kick plates fitted within limits
- Removal or correction of non-compliant additions
- Intumescent wraps or pads behind morticed hardware
When do you need a fire door ironmongery repair?
- Hinges are worn, dropped, missing screws or not fire-rated
- A lock or latch has failed or been replaced with an unsuitable one
- Letter plates or spy holes are not fire-rated
- Extra locks, chains or bolts have been added to fire doors
What do we check or do on each door?
| Hinges | Fire-suitable hinges to BS EN 1935, all screws present. |
|---|---|
| Morticing | Lock and latch cut-outs within the door's evidence and protected. |
| Additions | No unapproved bolts, chains or cat flaps through the leaf. |
| Marking | Hardware CE or UKCA marked where the product standard requires it. |
How does it work?
Identify
We record existing hardware and what the door needs.
Specify
Replacement items chosen with fire test evidence for the door type.
Fit
Hardware fitted with intumescent protection where required.
Test
Door operation checked from both sides.
How much do fire door ironmongery repairs cost?
Set of fire-rated hinges fitted £70–£160; locks and latches £85–£190 depending on type. Guide range £70–£190 per item, ex VAT. We confirm a fixed price once we know the building, door count and access. See all guide prices.
Which standards and law apply?
- BS EN 1935
- BS EN 12209
- BS EN 1154
- BS 8214:2026
Regulation 10 applies in England only. Wales, Scotland and Northern Ireland have their own fire safety law; see regulation 10 explained.
Fire Door Hinges & Ironmongery: questions
How many hinges does a fire door need?
Most single-leaf fire doors use three hinges; taller or heavier leaves may need four. The door's test evidence specifies the number and type.
Can I fit any lock to a fire door?
No. The lock must be suitable for fire doors and fitted within the size limits of the door's evidence, often with intumescent protection around the mortice.
Are cat flaps allowed in fire doors?
Not unless the flap is part of the door's tested design. A cat flap cut into a fire door, including many flat entrance doors, will normally make it non-compliant.
Do letter plates on flat doors need to be fire-rated?
Yes, where the flat entrance door is a fire door. Fire-rated letter plates include intumescent liners that close the opening in a fire.