Fire rated timber solution - Exterior and Interior

NZ Specifications
for WoodSafe™-Exterior

WoodSafe™-Exterior TDS plus
WoodSafe-Exterior MSDS plus

Australia Specifications
for WoodSafe™-Exterior

WoodSafe - Exterior TDS plus
WoodSafe - Exterior MSDS plus
Substrate | Timber
Surface Rating | Type A | BAL-29 | Group 1-S | Group 1
Substrate Thickness | Varies depending on timber species
Substrate Density | Various

WoodSafe™-Exterior is an off site treatment with a certified Type A and BAL-29 rating for exterior cedar cladding and Group 1-S and Group 1 rating for use outdoors and interior wet areas.


Fireshield WoodSafe™-Exterior is a factory-applied fire-rated solution used to impregnate timber boards, battens, and plywood (NZ only) sheets in all profiles and species to provide fully compliant fire-rated timber.

  • The fire treatment does not leach from the timber like some impregnation solutions.

  • The durability of the timber is increased.

  • There is no visible difference between treated and untreated timber.

To request a sample or for more detailed information including specifications please click the image below and we will be in touch. 


WoodSafe™-Exterior timbers are for exterior claddings needing a fire-rated solution rating and for wet or humid interior environments requiring a group surface fire rating.

WoodSafe™-Exterior treated timbers can be used:

  • As exterior claddings (cedar).
  • As timber battens and fins.
  • In interior wet and dry areas as wall and ceiling linings, boards or planks.
  • As exterior soffit linings/claddings.

For dry interior environments consider standard WoodSafe-Interior.


All profiles and species treated with WoodSafe™-Exterior :

New Zealand

  • Type A: Tested to C/AS2 Appendix C, C7.1 : achieving Type A compliance with C/AS2 NZBC External Fire Spread.
  • Group 1-S: Tested to EN13501-1:2010 and achieves Fire Class B-s1-d0. This is recognised as equivalent to Group 1-S under the NZBC Clause 3.4(a) providing compliance with NZBC C/AS1-C/AS7.


  • BAL-29: Tested and assessed according to AS 3959:2018, Appendix F, point F2 as a “Bushfire-resisting Timber”. The product is deemed to be acceptable to withstand exposure up to BAL-29. Compliance is achieved with NCC 2019 Clause G5.2.
  • Group 1: Tested and assessed according to AS 5637.1:2015 Part 1 and complies with NCC 2019 Specification C1.10 as a wall or ceiling lining system having a Group 1 with an average specific extinction area less than 250m2/kg.


The WoodSafe™-Exterior system is available in the following timber species direct from Fireshield or via major Timber Merchants in all profiles:

Exterior Cladding:

  • Western Red Cedar

Interior Linings:

  • Scotch Pine
  • Western Red Cedar
  • Douglas Fir/Oregon
  • Siberian Larch
  • Oak
  • Spruce
  • Sweet Chestnut
  • Plywood panels (NZ only)

Many more species available, please contact Fireshield for more information.


WoodSafe™-Exterior can be coated with a range of approved and tested stains, contact Fireshield.



All Fireshield WoodSafe™-Exterior timber products are certified sustainable by FSC and PEFC. Certification for each timber species will accompany each order.



The WoodSafe™-Exterior fire protection treatment is maintenance free and will last the lifetime of the timber when stored, installed and maintained in accordance with the WoodSafe technical documents.



Specify and Order WoodSafe™-Exterior Online