NZS 4251.1:1998

COMMITTEE REPRESENTATION

© COPYRIGHT

CONTENTS

RELATED 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 substrates

3.5 Plaster thickness

3.6 Expanded polystyrene block

4 STUCCO ON RIGID BACKING

4.1 Scope and general considerations

4.2 Materials and fixing

4.3 Metal reinforcement and flashings

4.4 Plaster systems for stucco on rigid backings

4.5 Plaster thickness for stucco on rigid backings

5 STUCCO ON NON-RIGID BACKING

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 backing

5.5 Plaster thickness for stucco on non-rigid backing

APPENDIX

A TYPES OF FINISHING COAT

B METHOD OF ASSESSMENT OF SAND

C COMMENTS ON CURING

D MATTERS OUTSIDE THE SCOPE OF THIS STANDARD

TABLE

1 – Laps for flashings

2 – Grading of sand

3 – Mixes for plastering

4 – Thickness of plaster coats for solid substrates

5 – Plywood sheet thickness

7 – Thickness of plaster coats for non-rigid backing

FIGURE

1(a) – Flashing for metal window frames

1(b) – Flashing for timber window frames

1(c) – Alternative sill detail

2 – Control joints

3 – Rigid backing detail

4 – Non-rigid backing detail

STANDARDS COUNCIL APPROVAL