What's new

Find and access recently published information and resources.


New BRANZ resources and publications


Corrosion research


  • BRANZ conducted field trials in Rotorua to examine how different building materials corrode and deteriorate in geothermal environments. The results of these trials have been published in a series of 4 fact sheets in the Research Now area:



Guideline June 2018


      1. Drilling bearers;
      2. Timber-framed garage doors;
      3. Wind speeds;
      4. Vertical timber shiplap cladding and wind zone.


The effects of humidity on gypsum plasterboard used as lateral load bracing for buildings


  • A new study report SR399 has been published and it examines environmental moisture levels which have the potential to reduce the effectiveness of plasterboard as a structural component. This project investigated the relationships between, and the performance of, plasterboard linings as lateral load-resisting elements in buildings. 


Changes to Building Code, Standards and legislation


New standards have been published


The following standards have been published by Standards New Zealand:

      1. AS/NZS2918:2018 - Domestic solid fuel burning appliances - Installation (supersedes AS/NZs2918:2001 as at 29 June 2018).
      2. AS/NZS1577:2018 - Scaffold decking components (supersedes AS/NZS1577:2013 as at 29 June 2018).
      3. AS/NZS4020:2018 - Testing of products for use in contact with drinking water (supersedes AS/NZS4020:2005 as at 29 June 2018).
      4. AS/NZS3500.1:2018 - Plumbing and drainage Part 1 - water services (supersedes AS/NZS3500.1:2015 as at 29 June 2018).
      5. AS/NZS3500.2:2018 - Plumbing and drainage Part 2 - Sanitary plumbing and drainage (supersedes AS/NZS3500.2:2015 as at 29 June 2018).
      6. AS/NZS3500.3:2018  - Plumbing and drainage - Part 3: Stormwater drainage (supersedes AS/NZS3500.3:2015 as at 29 June 2018).


 Revision to AS/NZS3000

The new edition of the Wiring Rules – AS/NZS 3000:2018 Electrical installations was released late last month. A legitimate version of the standard can be purchased from the Standards New Zealand website. Note that the Electricity (Safety) Regulations will continue to cite the current edition - AS/NZS 3000:2007, including Amendments 1 and 2, until they are amended.


 Other news and publications


Guide to altering an existing building


  • A new guide has been published by the Ministry of Business, Innovation and Employment (MBIE). The guide covers the issue of altering existing buildings, with a particular focus on fire and accessibility upgrades, managing building alterations, meeting specific requirements, demonstrating and assessing compliance, and provides a useful decision-making framework.


Exemptions from carrying out seismic work


  • The Ministry of Business, Innovation and Employment (MBIE) has published a new guide called "Exemptions from carrying out seismic work". The guide covers the process for applying for, granting and revoking exemptions.