What is proposed?

The proposed changes would allow a single hazard class, H1.2, to be used for nearly all internal timber framing. The Acceptable Solution for Building Code clause B2 (Durability) would be amended and clarified to allow this.

Streamlining the use of treated timber is expected to simplify choice and supply inventories, reduce potential errors in the use of timber and have health and safety benefits for users. It would also make the consent and inspection process more straightforward.

The proposed single hazard class, H1.2, has a boron treatment. Boron is the most benign treatment available and proven in New Zealand. Recent scientific research has shown that, for framing timber, H1.2 boron provides comparable protection against fungal decay to LOSP H3.1. In some parts of buildings, such as internal walls, the level of protection will increase.

The proposed changes are part of the Government's drive to make it easier for everyone to access, understand and comply with the Building Code and hence to 'build it right first time'.

Seminars

In the week beginning 20 September 2010, the Department plans to run seminars in Auckland, Rotorua, Wellington, Christchurch (tentative due to the earthquake) and Dunedin to discuss these and other Department proposals.

Please note that the consultation period closes on 29 October 2010.