your guide to fire doors

Frequently asked questions:

1. What is a fire door?
   • A fire door or fire rated door is a specially engineered door designed to withstand fire for a specific duration, such as 30, 60, or 120 minutes. It is a part of passive fire protection.
2. Where are fire doors used?
   • Fire doors or fire rated doors are commonly used in commercial buildings, offices, hotels, hospitals, residential complexes, and industrial facilities. They are installed at the exits and entry staircase, lift lobbies, main entry points, basements, server rooms, IT rooms, corridors, basements and escape routes.
3. Why are fire rated doors important?
   • Fire doors or fire rated doors is a part of passive fire protection solution. It slows the spread of flames, smoke, and hazardous gases. This gives occupants more time to evacuate safely. They are essential for meeting building codes and enhancing fire safety in homes, offices, hotels, hospitals, and commercial spaces.
4. Do fire doors come with hardware?
   • A fire door is not just the shutter and frame – it is a complete tested system. It includes frame, shutter and certified fire rated hardware such as hinges, locks, door closers, panic bars, and seals.
5. Do fire doors require special hardware?
   • Yes. Fire doors or fire rated doors must be installed with approved fire rated hardware such as hinges, door closers, panic bars, etc. The usage of hardware is based on the location and purpose of the fire door. Each fire door is equipped with right certified fire door hardware so it provides the complete safety, and compliance.
6. How long do fire doors provide protection?
   • As per the latest Indian Standard, IS 3614:2021, fire doors can offer fire protection for 30, 60, 90, or 120 minutes, depending on the certification and construction of the door.
7. What are the type of fire door available at Supreme Metwood?
   • There are majorly three types of fire doors available in the market. Other than these, we also provide HMPS Doors, FHC Doors, Fire Rated Windows, Glazed Fire Partition.
     • Wooden Fire Doors – Elegant and safe, perfect for hotels and residences.
     • Metal Fire Doors – Durable and strong, ideal for commercial and industrial use.
     • Glazed Fire Doors – With fire-resistant glass for visibility and safety, ideal for offices and hotels.
8. What is the latest fire door specification as per Indian Standard?
   • IS 3614:2021 is the latest fire door specification in India. It is the comprehensive guidelines for fire-check doors and door sets. This standard covers various aspects, including material, construction, fire resistance rating, hardware, and smoke seals. It has replaced the previous standard IS 3614 (Part 1) : 1966 and IS 3614 (Part 2) : 1992 with the notification issued on 20th May, 2021 with reference number Ref: HQ-PUB013/1/2020-PUB-BIS (157).
9. What changes have been proposed in Metal Fire Door as per latest IS Code?
   • Below are the major changes that have been implemented with IS 3614:2021:
     • he minimum steel sheet thickness recommended for frames and shutter shall be 1.2 mm (18 gauge) for a frame depth of 150 mm.
     • Minimum insulation shall be of 30 minutes.
     • The infill material used, shall be resin bonded, like Mineral Wool/Rock Wool.
     • It is mandatory for the door manufacturer to test and supply insulated doors with intumescent seal and smoke seal.
     • Wired glass shall not be used as vision pane. Also interlayered glass or laminated gel glass, that becomes opaque and affects visibility shall not be used.
     • Maximum allowed size for a vision pane (glass) or pane is 0.12 sqm for uninsulated door. For insulated doors the maximum glass shall not exceed more than 0.06 sqm.
     • The maximum wall opening size for any hinged metallic fire door shall not exceed 7.2 sqm with the maximum permissible width of 2.4 m and height of 3.0 m.
10. What changes have been proposed in Wooden Fire Door as per latest IS Code?
    • Below are the major changes that have been implemented with IS 3614:2021:
      • The infill material used, shall be resin bonded, like Mineral Wool/Rock Wool.
      • It is mandatory for the door manufacturer to test and supply insulated doors with intumescent seal and smoke seal.
      • Wired glass shall not be used as vision pane. Also interlayered glass or laminated gel glass, that becomes opaque and affects visibility shall not be used.
      • Maximum allowed size for a vision pane (glass) or pane is 0.06 sqm.
      • The maximum wall opening size for any hinged metallic fire door shall not exceed 7.2 sqm with the maximum permissible width of 2.4 m and height of 3.0 m.
      • Intumescent paints and varnishes can be used only on timber-based fire resisting doorsets where a maximum performance of 30 min integrity is required, and not suitable for 120 min door.