Submissions are open until 8 September to have your say on the future of frame construction timber.
Changes are afoot when it comes to timber in construction. New Zealand’s principal standard for frame construction, NZS3604, has been under review for a number of years. Input has been provided from Frame and Truss Manufacturers Association representatives throughout the review period. Standards New Zealand have now opened public consultation on the draft revision. Industry groups are invited to review the draft and make submissions.
NZS 3604 was first published in 1978 and was last updated in 2011. This current revision reflects changes since 2011 in practice, materials, the Building Code, evidence, science, technology and regulatory requirements. It also includes knowledge from the Canterbury earthquakes. The work was commissioned by MBIE’s Building System Performance and led by Standards New Zealand, with input from a large number of industry groups, other stakeholders and subject matter experts – including FTMA.
What's changing
This revision focuses on improving both usability and technical coverage of NZS 3604. Key areas of change include:
- New and updated framing solutions for three-storey construction (excluding bracing).
- Improved guidance on thermal performance, including new construction details.
- Updated foundation solutions for a wider range of ground conditions, such as moderately expansive soils and liquefaction-prone sites.
- Clarification of requirements for stairwell framing and isolated internal masonry walls.
- Rationalisation of timber sizes and grades to align with materials commonly available in the New Zealand market.
Your input matters
Feedback is being sought from across the sector. FTMA strongly encourages all its members to have their say on the draft.
The consultation period is now open, and submissions close on Tuesday 8 September 2026.
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