Fire Stopping, Fire Doors, Fire Protection, Fire Risk Assessments

Key Facts About Fire Doors

The primary reason for fire doors being installed in buildings is of course to save lives and property in the event of a fire. In 2016-17 there were 261 deaths in the UK resulting from fire. It is essential a fire door performs by  slowing the progress of a fire, so care must be taken both when purchasing, and installing fire doors.
Fire doors can vary greatly in design from functional door blanks through to attractive solid and glazed designs. The most common type of fire door is an FD30, a fire door that will last a minimum of 30 minutes in a fire. FD60 (60 minutes) fire doors are most commonly used in commercial settings. 

Construction of a fire door

FD30 (30 minutes) fire doors are usually 44mm thick, as opposed
to the standard door thickness of 35 mm. FD60 (60 minute)
fire doors most commonly used in commercial settings are
normally 54mm thick.Specially constructed fire doors can
have a rating of 4 hours or more.

Most fire doors have a solid core construction which can include:
particleboard, chipboard, flaxboard and solid timber. The assembly
of a fire door can vary greatly, some have: a timber framing around
the core with a laminated veneer; others have a lipping (5-20mm thick)
around the core with a veneer on top; and in some cases a plywood,
veneer or MDF facing is glued on to the core without framing or lippings.
There is no preferred construction method, as long as the desired fire rating is achieved.

How fire doors work?

A fire door must be fitted with approved intumescent strips which play a crucial part in achieving the fire door rating. When subjected to heat, the intumescent strips expand and seal the gap between the door edge and the frame. Intumescent seals can be fitted within the door frame or grooved into the door edge. Advice on the intumescent strips can be obtained from the test evidence report, which we can provide.
The material from which the door frame is constructed (e.g. softwood, hardwood or MDF), as well as its section sizes must comply with the required standards. Furthermore, essential hardware (ironmongery) must also have its’ own individual test evidence to show fitness for purpose.

Fire doors - proof of performance

All fire doors must have the appropriate proof of performance for the ratings they carry. This proof is obtained by subjecting the door to testing to BS 476 Part 22 or to the European equivalent BS EN 1634.

What make a fire door work?

In the event of a fire the following elements are CRITICAL to make sure a fire door performs in a fire.
  • Door leaf
  • Frame / lining
  • Intumescent seals
  • Smoke seals
  • Latch or lock
  • Hinges
  • Door closer*
  • Signage*
  • Other ironmongery*
  • Fire door glazing*
  • Frame / wall sealing
  • Threshold seals*
  • Air transfer grille (ATG)*
   (*if required)

Get just 1 thing WONG =

High chance of failure = Loss of Life or Property


Our fire door inspectors carry out a full and thorough inspection of every fire door assembly in your building, taking time to check that all components are in place and working effectively. On completion of the door inspection, a label is attached to each fire door recording the date of the inspection and demonstrating to the users of the building that the doors have been surveyed professionally.


Mon - Fri: 7am - 5pm      Sat: 7am - 5pm


Passive Fire Protection has been our number one priority for over 30 years. Protecting properties, Protecting lives. 


- Fire Stopping

- Fire Doors

- Fire Equipment

- Fire Safety Signs

- Fire Risk Assessments


Unit 16.

Oakland Farm Ind. Est.

Goatsmoor Lane,

Stock, Ingatestone,

Essex. CM4 9RS

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