What Is A Fire Door? Understanding Its Role In Passive Fire Protection
What is Passive Fire Protection?
Passive fire protection is the precautionary measures taken within a building’s structure which are designed to stop the spread of fire and smoke, without needing activation. An example of this is a fire door. This is different to active systems like fire extinguishers or alarms as these need activating in some form. Passive Fire Protection measures are always working in the background.
What is a Fire Door?
A fire door is a specially designed and tested door that helps contain fire and smoke in a specific area for a designated amount of time – typically 30 or 60 minutes (FD30 or FD60 rated).
Key features of a fire door include:
- Constructed from fire-resistant materials, such as solid timber cores or composite cores with fire-retardant linings
- Fitted with intumescent seals, which expand when exposed to heat to block gaps
- Equipped with smoke seals, automatic closers, and fire-rated ironmongery
- Installed as a certified doorset, including frame, hardware, and seals — all tested as a complete unit
How to check if your Fire Doors are compliant:
How to Tell if Your Fire Doors Are Compliant
1. Certification:
Inspect the top or side edge of the door for a certification label or plug. If there’s no visible certification, the door can’t be verified as a fire-rated product.
2. Gap Size:
Ensure the gaps between the door and the frame — particularly along the top and sides — are under 4mm when closed. A £1 coin (roughly 3mm thick) is a handy tool to check this.
3. Seals:
Check for the presence of intumescent seals fitted into the frame edge. These seals should be intact and free from damage.
4. Hinges:
Make sure all hinges are firmly attached with no screws missing or damaged. Secure hinges are vital for fire door performance.
5. Self-Closing:
The door must close tightly onto the latch on its own. Open it halfway and observe if the door closer brings it fully shut — if not, the door may not function as a proper fire barrier.
How do Fire Doors contribute to Passive Fire Protection?
Fire Doors contribute to passive fire protection by acting as a partition between different areas of the building, this means they help prevent the spread of fire and smoke. This helps to protect escape routes such as corridors and stairwells which buys valuable time for those evacuating and helps contain the fire for emergency responders.
How can Dorplan contribute to Passive Fire Protection?
Dorplan plays a key part in supporting passive fire protection through the supply of certified fire doorsets, tailored to not only your building’s needs, but aesthetics.
We supply and manufacture fully compliant FD30, FD60, and higher-rated door sets, tested to BS 476-22 and BS EN 1634-1 standards.
Talk to the experts:
If you’re a passive fire protection company looking for a reliable supplier of fully certified fire doorsets, our team is here to help. Contact us today to discuss your project requirements.
