Issue 30 – August 2011
Amendment 7 to NZBC B2/AS1 altered the required treatment levels for solid radiata pine and Douglas fir timbers when used in structures. The required treatment level for floors constructed from these timbers is H1.2. However, this only applies to solid timber floors. Particleboard flooring does not require any treatment in dry interior environments as specified by NZS 3602:2003. For protection of particleboard flooring in wet areas, refer to the manufacturer's recommendations.
- NZS 3602:2003 Timber and wood-based products for use in building