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What are the fire resistance requirements for internal doors in a Class 2 building?

Direct Answer

Internal doors in a Class 2 building (apartments) must comply with fire resistance requirements set out in NCC Volume One (BCA). The specific requirements depend on the door's location relative to fire compartments, exits, and sole-occupancy units (SOUs). 1

MANDATORY Doors forming part of a fire-resisting separation between SOUs or between an SOU and a public corridor must achieve an FRL of –/60/30 (integrity 60 min, insulation 30 min):

"A door … in a wall required to have an FRL must be a fire door with an FRL not less than that specified in Table C3D10 for the wall type and location." 1

MANDATORY Doors to fire-isolated exits (stairwells) require a minimum FRL of –/60/30 and must be self-closing with smoke seals compliant with AS 1905.1. 2

"A self-closing fire door or fire shutter must … be fitted with a door closer … and where located in a required exit … must incorporate smoke seals tested to AS 1530.7." 2

GUIDANCE Internal doors within an individual SOU (e.g. bedroom to hallway inside the apartment) generally have no specific fire resistance requirement, unless the building has a Performance Solution that imposes one. 3

✅ Verified — corpus match 🔗 Cross-ref AS 1905.1

⚠️ This response is based on verified corpus extracts and should be validated against the current edition of NCC/BCA. It does not constitute professional compliance advice. Always consult the relevant authority and a qualified professional.

Sources

1 NCC Vol 1 · C3D10 (Table)

Fire door FRLs for Class 2–9 buildings. Table C3D10 specifies that doors in walls separating SOUs or between SOUs and corridors require –/60/30 minimum.

2 NCC Vol 1 · C3D15

Self-closing fire doors in required exits must incorporate smoke seals tested to AS 1530.7 and be fitted with approved door closers per AS 1905.1.

3 NCC Vol 1 · C2D2

Fire compartmentation requirements — internal walls within a single SOU are not required to have an FRL unless forming part of a fire-resisting separation.

Fire resistance for internal doors in Class 2?

Direct Answer

Doors separating SOUs or between SOUs and corridors require an FRL of –/60/30 per NCC Table C3D10. 1

"A door in a wall required to have an FRL must be a fire door with an FRL not less than that specified in Table C3D10…"

MANDATORY Exit doors need –/60/30 + smoke seals per AS 1905.1. 2

✅ Verified

NCC Vol 1 · C3D10 (Table)

Fire door FRLs for Class 2–9 buildings. Doors separating SOUs require –/60/30 minimum.

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