NZS 4251.1:2007
Solid plastering - Cement plasters for walls, ceilings and soffits
Sets out the requirements for solid plaster, and stucco over a drained and vented cavity with a rigid or non-rigid backing in buildings, to achieve structurally sound, hard, durable and water resistant surfaces. This revision has introduced the requirement of cavity behind the plaster and applies to exterior and interior walls where impact loads are limited to soft body impacts associated with domestic use.
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Committee Representation
Acknowledgement
publication. CoPyRight
Contents
Referenced Documents
Foreword
Review of Standards
1 SCOPE AND INTERPRETATION
1.1 Scope
1.2 Interpretation
1.3 New Zealand Building Code
1.4 Application
1.5 Definitions
2 GENERAL CONSIDERATIONS
2.1 General requirements of solid plastering
2.2 Materials for solid cement plasters
2.3 Plaster mixes
2.4 Batching and mixing
2.5 Application and curing of plaster coats
2.6 Surface coatings
2.7 Maintenance
3 SOLID SUBSTRATES
3.1 Scope
3.2 Surface preparation
3.3 Assessment of porosity and surface dampening
3.4 Plaster systems for solid substrate
3.5 Plaster thickness for solid substrates
4 STUCCO ON RIGID BACKINGS
4.1 Scope and general considerations
4.2 Materials and fixing
4.3 Plaster systems for stucco on rigid backings
4.4 Plaster thickness for stucco on rigid backings
5 STUCCO ON NON-RIGID BACKINGS
5.1 Scope and general considerations
5.2 Materials and fixing
5.3 Metal reinforcement and flashings
5.4 Plaster systems for stucco on non-rigid backings
5.5 Plaster thickness for stucco on non-rigid backings
APPENDIX
A – MATTERS OUTSIDE THE SCOPE OF THIS STANDARD
B – TYPES OF FINISHING COAT
C – SAND ASSESSMENT METHOD
D – PLASTER ON CURING
Table
1 – Grading of sand
2 – Grading of finishing sand
3 – Mixes for plastering (by volume)
4 – Plaster systems for solid substrates
5 – Thickness of plaster coats for solid substrates
6 – Plywood sheet thickness
7 – Thickness of plaster coats for rigid backing
8 – Thickness of plaster coats for non-rigid backing
Figure
1(a) – Flashing for metal window frames
1 (b) – Flashing for timber
2 – Stucco pipe penetration
3 – Control joints of windows
4(a) – Stucco control joint – Vertical T-section
4(b) – Stucco control joint – External corner
4(c) – Stucco control joint – Vertical sealant
4(d) – Stucco control joint – Horizontal
Figure 4(b) – Stucco control joint – External corner
5 – Rigid backing detail
6 – Non-rigid backing detail
C1 – Bottle test
Standards Council Approval
- B1
- B2
- E2
Previous versions
-
NZS 4251.1:1998
Download
- B1
- B2
- E2
- NZS 4251.1:1998
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Related Information
Building Code Compliance Document E2
Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
Section: AS1
Citation context:Building Code Compliance Document B2
Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
Section: AS1
Citation context:Licensed Building Practitioners Rules 2007
Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
Section: Schedule 1
Citation context:Included in Performance Indicators for Licence Class External plastering.
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Committee Representation
Acknowledgement
publication. CoPyRight
Contents
Referenced Documents
Foreword
Review of Standards
1 SCOPE AND INTERPRETATION
1.1 Scope
1.2 Interpretation
1.3 New Zealand Building Code
1.4 Application
1.5 Definitions
2 GENERAL CONSIDERATIONS
2.1 General requirements of solid plastering
2.2 Materials for solid cement plasters
2.3 Plaster mixes
2.4 Batching and mixing
2.5 Application and curing of plaster coats
2.6 Surface coatings
2.7 Maintenance
3 SOLID SUBSTRATES
3.1 Scope
3.2 Surface preparation
3.3 Assessment of porosity and surface dampening
3.4 Plaster systems for solid substrate
3.5 Plaster thickness for solid substrates
4 STUCCO ON RIGID BACKINGS
4.1 Scope and general considerations
4.2 Materials and fixing
4.3 Plaster systems for stucco on rigid backings
4.4 Plaster thickness for stucco on rigid backings
5 STUCCO ON NON-RIGID BACKINGS
5.1 Scope and general considerations
5.2 Materials and fixing
5.3 Metal reinforcement and flashings
5.4 Plaster systems for stucco on non-rigid backings
5.5 Plaster thickness for stucco on non-rigid backings
APPENDIX
A – MATTERS OUTSIDE THE SCOPE OF THIS STANDARD
B – TYPES OF FINISHING COAT
C – SAND ASSESSMENT METHOD
D – PLASTER ON CURING
Table
1 – Grading of sand
2 – Grading of finishing sand
3 – Mixes for plastering (by volume)
4 – Plaster systems for solid substrates
5 – Thickness of plaster coats for solid substrates
6 – Plywood sheet thickness
7 – Thickness of plaster coats for rigid backing
8 – Thickness of plaster coats for non-rigid backing
Figure
1(a) – Flashing for metal window frames
1 (b) – Flashing for timber
2 – Stucco pipe penetration
3 – Control joints of windows
4(a) – Stucco control joint – Vertical T-section
4(b) – Stucco control joint – External corner
4(c) – Stucco control joint – Vertical sealant
4(d) – Stucco control joint – Horizontal
Figure 4(b) – Stucco control joint – External corner
5 – Rigid backing detail
6 – Non-rigid backing detail
C1 – Bottle test
Standards Council Approval
- B1
- B2
- E2
Previous versions
-
NZS 4251.1:1998
Download
- B1
- B2
- E2
- NZS 4251.1:1998
NZS 4251.1:2007
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.