Fire

Floors

The New Zealand Building Code, Clauses C1-C6 require a minimum critical radiant flux (CRF) when tested to ISO 9239-1:2010 of between 1.2 and 4.5 kW/m² and above, depending on the area within the building and the building’s Risk Group. The fire test ISO 9239:1 2010 is only for floor coverings, not wall coverings. Some tests note a CHF which stands for Critical Heat Flux and is and interchangeable term with CRF.

Floor surface materials in the following areas of buildings must meet the performance criteria specified below:

General fire code requirements (floors) *Minimum critical radiant flux when tested to ISO 9239-1: 2010
Area of Building Buildings not protected with an automatic fire sprinkler system* Buildings protected with an automatic fire sprinkler system*
Sleeping areas and exitways in buildings 
where care or dentention is provided.
4.5 kW/m² 2.2 kW/m²
Exitways in all other buildings
2.2 kW/m² 2.2 kW/m²
Firecells accommodating more than 50 persons
2.2 kW/m² 1.2 kW/m²
All other occupied spaces except house hold units
1.2 kW/m² 1.2 kW/m²
Product specific fire code requirements (floors) *Minimum critical radiant flux when tested to ISO 9239-1:2010
Products
Critical Radiant Flux kW/m²*
  • Forbo Coral Classic 8.9 kW/m²
    Forbo Coral Duo 11 kW/m²
    Forbo Coral Brush 10.4 kW/m²
    Interface Step Repeat - SR999 (GlasBac) 5.3 kW/m²
  • Interface GlasBac Nylon Carpet Tiles Various - Refer to Test Reports
    Interface CushionBacRE Nylon Carpet Tiles Various - Refer to Test Reports
    Interface CQuestBio Nylon Carpet Tiles Various - Refer to Test Reports
    Interface CQuestBioX Nylon Carpet Tiles Various - Refer to Test Reports
    Forbo Tessera Nylon Carpet Tiles Various - Refer to Test Reports
  • Forbo Marmoleum Sheet 5.2 kW/m²
    Forbo Marmoleum Cocoa 8.4 kW/m²
    Forbo Marmoleum Modular 6.9 kW/m²
    Forbo Marmoleum Ohmex (ESD) 6.8 kW/m²
    Forbo Marmoleum Acoustic 8.4 kW/m²
  • Forbo Sphera 9.2 kW/m²
    Forbo Sphera SD EC 9.6 kW/m²
  • Forbo Eternal 8.6 kW/m²
    Forbo Sarlon 15dB 8.6 kW/m²
    Forbo Sarlon 19dB 8.1 kW/m²
    Forbo Forbo Sarlon Modul'up 8.1 kW/m²
    Forbo Colorex EC SD 10.5 kW/m²
  • Forbo Surestep & Safestep 8.8 kW/m²
  • Interface 4.5mm SoundChoice LVT 9.4 kW/m²
    Interface 3mm Criterion LVT 10.0 kW/m²
    Forbo Allura Flex FL5 6.7 kW/m²
    Forbo Allura Puzzle 8.8 kW/m²
  • norament Pastilles 825 5.6 kW/m²
    norament Arago 9 kW/m²
    norament Costello 10.6 kW/m²
    norament Grano 7.7 kW/m²
    norament Kivo 9.8 kW/m²
    norament Pado 9.7 kW/m²
    norament Satura 10.9 kW/m²
    noraplan Sentica (2mm) 4.6 kW/m²
    noraplan Signa (2mm) 8.8 kW/m²
    noraplan Stone (Smooth) 7.7 kW/m²
    noraplan Uni 10.3 kW/m²
    noraplan Ultra Grip 8.5 kW/m²
  • Forbo Flotex Sheet 9.0 kW/m²
    Forbo Flotex Tile 8.4 kW/m²

Walls

General fire code requirements (walls) *Performance determined under conditions described in ISO 9705:1993
Area of building Buildings not protected with an automatic fire sprinkler system* Buildings protected with an automatic fire sprinkler system*
Wall/ceiling materials in sleeping areas where care or detention is provided
Material Group Number 1-S Material Group Number 1 or 2
Wall/ceiling materials in exitways
Material Group Number 1-S Material Group Number 1 or 2
Wall/ceiling materials in all occupied spaces in importance level 4 buildings
Material Group Number 1-S Material Group Number 1 or 2
Internal surfaces of ducts for HVAC systems
Material Group Number 1-S Material Group Number 1 or 2
Ceiling materials in crowd and sleeping uses except household units and where care or detention is provided
Material Group Number 1-S or 2-S Material Group Number 1 or 2 or 3
Wall materials in crowd and sleeping uses except household units and where care or detention is provided
Material Group Number 1-S or 2-S Material Group Number 1 or 2
Wall/ceiling materials in occupied spaces in all other locations in buildings, including household units
Material Group Number 1, 2 or 3 Material Group Number 1 or 2
External surfaces of ducts for HVAC systems
Material Group Number 1, 2 or 3 Material Group Number 1 or 2
Acoustic treatment and pipe insulation within airhandling plenums in sleeping uses
Material Group Number 1, 2 or 3 Material Group Number 1 or 2
Product specific fire code requirements (walls) *ISO 9705, ISO 5660 & EN13501
Products
Material group*
  • Onyx+ Group 1
    Onyx Impact Group 1s
  • Sphera Group 3
    Eternal Group 3
    Step Safety Group 3
  • Marmoleum Sheet Group 3
    Bulletin Board (Pinboard Linoleum) Group 3
    Desktop (Furniture Linoleum) Group 3
  • Flotex Sheet Group 3

More information

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New Zealand Building Code C1-C6 Fire