UPDATES TO, PLASTER BOARD, PAINTING & TREATMENT STANDARDS
A number of Standards have been updated recently including the following:
AS/NZS 2589: 2017, Gypsum Linings - Application and Finishing
This new Standard supersedes the old version AS/NZS 2589: 2007.
The new version of the Standard is very similar to the old one, changes include:
- New part on inspection at handover
- Inclusion of surface tolerances within the main text
- Cross-reference and alignment with AS/NZS 2311 (painting)
Of particular interest is the new part 4.7, "Assessment of the Surface Condition at Handover". Although it has been partly taken from the old 2007 Appendix E, it does go a lot further. It could help create more agreement about the quality of the surface finish during inspections.
AS/NZS 2311: 2017, Guide to the Painting of Buildings
This new Standard supersedes the old version AS/NZS 2311: 2009.
Fairly minor updates, including:
- Updated reference documents
- Adding paint type B16A (Alkali resistant) water-borne sealer to Table 4.2, Paint Types
AS/NZS 1604.2 to 1604.5: 2012, Specification for Preservative Treatment, Amendment 1: 2017
The four parts each updated with their own Amendment1:2017 are:
- AS/NZS 1604.2: 2012, Specification for Preservative Treatment - Reconstituted Wood-based Products
- AS/NZS 1604.3: 2012, Specification for Preservative Treatment - Plywood
- AS/NZS 1604.4: 2012, Specification for Preservative Treatment - Laminated Veneer Lumber (LVL)
- AS/NZS 1604.5: 2012, Specification for Preservative Treatment - Glue Laminated Timber Products
The amendments to all the four Parts have been reasonably substantial but have a common theme. These are:
- Updated and simplified preservative treatment requirements. In particular the addition of copper and water based Azoles to all Parts, and Bifenthrin to Part 2 (for OSB & LSL strand products)
- Amended marking information requirements
- Addition of a new Appendix C 'Timber Preservatives", with a very helpful new Table C1 "Preservative Identification Numbers". This table relates preservative types to their Code Number for more accurate descriptions, particularly as they are used in the abbreviated markings. This new table is more extensive, up-to-date and detailed than the old table in NZS 3640
- Addition of a new Appendix D "Abbreviated Marking" which indicates what you should see marked on individual items or packs of items (under certain circumstances). This allows you to identify the preservative and the Hazard Class at a glance
Only AS/NZS 1604.3 is cited in NZBC, and then only in NZBC (Simple House) SH/AS1 Table 2.7, which makes no substantive difference when using the Amended version. So Masterspec will reference the new Amended versions for all four Parts.
All the changes to these Standard and others have not produced any major changes to Masterspec sections, however all affected sections have now been updated.