Fire safe use of timber construction

The system used to regulate all combustible interior lining materials in New Zealand has proven to be a barrier to the use of exposed timber linings. This may be partially addressed with proposed changes to the New Zealand Building Code.
Lead organisation
OFR Consultants Ltd
Focus area
Resilience
Start date
Status
Complete
Last updated 23 Apr 2026
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About this programme

The system used to regulate all combustible interior lining materials in New Zealand has proven to be a barrier to the use of exposed timber linings. This may be partially addressed with proposed changes to the New Zealand Building Code. However, sound engineering methodologies can give confidence in understanding of the real fire hazard in a wide range of room sizes and lining configurations. This research delivered innovative modelling capability. It also supported a more efficient compliance framework for reducing barriers to the use of timber-based materials in New Zealand buildings. It informed improved design and analysis methodologies, giving flexibility in the use of exposed timber (or appropriately protected timber) in a wide range of mid-rise and tall buildings. This supported an efficient and consistent level of fire safety in timber buildings and reduced existing barriers to their construction.