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Info Centre
Home > Info Centre > How to Door Guides > Key Facts About Fire Doors
  • Info Centre 
  • Fire Doors 
    • Overview 
    • BWF-CERTIFIRE Scheme Fire Doors 
    • Key Facts About Fire Doors 
    • How to Fit Internal Fire Doors 
    • Glazed Fire Doors 
    • FD30 Fire Door Glazing Service 
  • How to Door Guides 
    • How to Measure up for a New Door 
    • How to Fit an Internal Door 
    • How to Fit an External Door 
    • How to Fit Internal Fire Doors 
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    • How to Create a Door Pair 
  • Standard Door Sizes 
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    • Internal Door Care 
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    • Glossary of Door Terms 
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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 2013-14 there were 322 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. 

How to fit a fire door

When are fire doors required?

JB Kind River Oak Cherwell Fire DoorBasically wherever a fire might start, it is advisable to use a fire door. For example, doors leading from: a kitchen; a lounge with a fireplace & TV; or any room with electrical equipment or flammable items.

Building regulations for domestic properties stipulate when fire doors should be used and the key areas are:

  • If a 2 storey house has a door leading from an integral garage into the house it must be a fire door.
  • New build or renovated properties with 3 storeys or more, including loft conversions, must have FD30 fire doors to every habitable room off the stairwell.

Local councils issue planning permission and are responsible for policing building regulations through Building Control Officers. The architect who has specified the project is the best first point of call, regarding fire door requirements and regulations.  For more information, read our blog Do I need fire doors in my home?

Commercial property regulations are substantially different and it’s rare that a commercial building does not have some fire doors.

Construction of a fire door

FD30 (30 minutes) fire doors are usually 45mm 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.

For more information you can download our factsheet on FD30 fire doors.


Accreditations

FSC
British Woodworking Federation
ISO 9001
TRADA Member
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JB Kind Doors, Portal Place
Astron Business Park,
Hearthcote Road,
Swadlincote, Derbyshire
DE11 9DW, UK

Tel: 01283 554197

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