Everything You Need to Know About Fire Doors in the UK
Fire doors save lives. Following the Grenfell tragedy and subsequent updates to UK Building Regulations, understanding fire door requirements has never been more important. This guide explains what fire doors are, where you need them, and how to choose the right ones.
What Is a Fire Door?
A fire door is a specially engineered door designed to resist the spread of fire and smoke for a certified period. Unlike standard doors, fire doors are constructed with fire-resistant cores — typically solid timber, particleboard, or mineral cores — and tested to rigorous British and European standards.
Fire Door Ratings Explained
| Rating | Protection Time | Common Use |
|---|---|---|
| FD30 | 30 minutes | Most domestic applications, flats, integral garages |
| FD60 | 60 minutes | Commercial buildings, high-risk areas, stairwells |
| FD90 | 90 minutes | Industrial and high-hazard commercial premises |
| FD120 | 120 minutes | Specialist applications, server rooms, archive storage |
The most common domestic rating is FD30, which provides 30 minutes of fire resistance — enough time for occupants to escape and for fire services to arrive.
Where Are Fire Doors Required by Law?
Under UK Building Regulations (Approved Document B), fire doors are mandatory in these situations:
Houses
- 3+ storey homes: Fire doors required on every habitable room opening onto the stairway
- Integral garages: FD30 fire door required between garage and house
- Loft conversions: Fire doors on the new room and along the escape route to the front door
Flats & Apartments
- Front entrance door must be FD30S (S = smoke sealed)
- All doors opening onto communal corridors or stairways
- Utility cupboard doors in communal areas
HMOs (Houses in Multiple Occupation)
- All bedroom doors
- Kitchen doors
- Doors to communal areas
- Often FD30S with self-closing devices
Key Components of a Fire Door Assembly
A fire door is only as good as its complete assembly. Every component matters:
1. The Door Leaf
The door itself must be a certified fire door — you cannot make a standard door into a fire door. Our fire door collection includes FD30 and FD60 options in various styles.
2. The Frame
Fire doors must be hung in compatible fire-rated frames. Standard softwood frames need upgrading or replacing when fitting fire doors.
3. Intumescent Strips
These strips expand when heated, sealing the gap between door and frame to prevent fire spread. Combined smoke and intumescent strips provide dual protection.
4. Hinges
Fire doors require a minimum of three CE-marked hinges. Standard two-hinge setups are not compliant.
5. Hardware
All handles, locks, and other hardware must be fire-rated and tested as part of a fire door assembly.
6. Self-Closing Devices
Required in commercial settings and HMOs. Overhead closers or concealed closers ensure the door returns to the closed position after use.
Common Fire Door Mistakes to Avoid
- Propping doors open: This completely defeats the purpose. Use hold-open devices linked to the fire alarm if needed.
- Cutting too much off: Removing more than the manufacturer allows voids the fire rating.
- Missing intumescent strips: The door alone won't stop fire without proper sealing.
- Wrong hardware: Non-fire-rated handles or letter plates create weak points.
- Damaged doors: Cracks, holes, or warping compromise fire resistance. Replace immediately.
Fire Door Maintenance Checklist
Fire doors should be inspected regularly. Check these points every six months:
- Door closes fully into the frame without sticking
- Intumescent strips are intact and undamaged
- No gaps greater than 3mm around the door edges
- All three hinges are secure and functioning
- Self-closer (if fitted) operates correctly
- No visible damage to the door leaf
- Signage is in place (commercial properties)
Choosing the Right Fire Door Style
Fire doors don't have to look industrial. Modern fire doors come in beautiful designs that match any interior. From sleek white primed fire doors to stunning oak fire doors, you can meet safety requirements without compromising on style.
Shop Fire Doors at Luxury Door Studio is a trading name of Express Matting Services Ltd
Browse our complete fire door collection for FD30 and FD60 rated doors in a range of styles, sizes, and finishes. All our fire doors are fully certified and tested to British Standards. Express Shipping On All UK Orders.