AS/NZS 4548.1:1999

1 - AS/NZS 4548.1:1999 GUIDE TO LONG-LIFE COATINGS FOR CONCRETE AND MASONRY - WALL COATINGS-LATEX EXTENSIBLE
4 - PREFACE
5 - CONTENTS
6 - FOREWORD
7 - 1 SCOPE
7 - 2 REFERENCED DOCUMENTS
7 - 3 DEFINITIONS
7 - 3.1 System
7 - 3.2 System integrity
7 - 3.3 Working up
7 - 4 TYPICAL PROPERTIES AND CHARACTERISTICS
7 - 4.1 Composition
8 - 4.2 Conditions of test
8 - 4.3 Liquid paint
8 - 4.3.1 Condition in container
8 - 4.3.2 Fineness of grind
8 - 4.3.3 Volume solids
8 - 4.3.4 Storage stability
8 - 4.3.5 Viscosity
8 - 4.4 Application properties
8 - 4.4.1 General
8 - 4.4.2 Rolling
9 - 4.4.3 Spraying
9 - 4.5 Applied film
9 - 4.5.1 Recoating properties
9 - 4.5.2 System integrity
9 - 4.5.3 Resistance to mudcracking
9 - 4.5.4 Elongation
9 - 4.5.5 Water transmission
9 - 4.5.6 Water vapour transmission
9 - 4.5.7 Carbon dioxide diffusion
9 - 4.5.8 Chloride ion diffusion
9 - 4.5.9 Washability (interior products only)
9 - 4.5.10 Coalescence
10 - 4.5.11 Crack resistance
10 - 4.5.12 Resistance to weathering (exterior products only)
12 - 5 PACKAGING
12 - 6 LABELLING
13 - APPENDIX A - GUIDANCE ON THE USE AND APPLICATION OF LATEXEX TENSIBLE WALL COATINGS
13 - A1 SCOPE
13 - A2 MANUFACTURER'S TECHNICAL DATA
13 - A3 SAFETY PRECAUTIONS
13 - A4 GENERAL DESCRIPTION
13 - A5 PROTECTION OF CONCRETE STRUCTURES
14 - A6 PROTECTIVE PROPERTIES OF MEMBRANE COATINGS
14 - A6.1 Elasticity
14 - A6.2 Water transmission
14 - A6.3 Water vapour permeability
14 - A6.4 Carbon dioxide diffusion
14 - A6.5 Chloride ion permeability
15 - APPENDIX B - LIST OF REFERENCED DOCUMENTS

Provides a guide to the features and typical characteristics of long-life extensible coatings intended for exterior or interior use on concrete and masonry, when applied by airless spray or roller in accordance with the manufacturer's instructions.

This Standard provides a guide to the features and typical characteristics of long-life extensible coatings intended for exterior or interior use on concrete and masonry, when applied by airless spray or roller in accordance with the manufacturer's instructions. Paints covered by this Standard are classified as paint Type 38 of AS 2311 and correspond generally to Australian Paint Approval Scheme specification Type 2 of GPC-C-117.Latex extensible wall coatings are generally referred to as membrane coatings. They are non-aggregate, flexible, watertight finishes which are applied to prevent the ingress of moisture and which will retain flexibility at varying temperatures, so accommodating expansion or contraction of the substrate. Extensible coatings also provide anti-carbonation resistance. These coatings are not intended for use on horizontal surfaces where water ponding is possible. They are normally specified in systems that may have a sealer and multiple coats.Application of membrane coatings may be by airless spray, textured roller (low profile texture) or nap roller and typically would be at a spreading rate of 1.0-2.0 m2/L (1.0-0.5 L/m2) per coat. The total film thickness applied will be critical in achieving required levels of performance, particularly crack bridging where higher film thicknesses improves this property.NOTES:1 AS/NZS 4548.5 provides a test which may be used to check the cure of concrete and masonry surfaces before applying the sealer.2 Appendix A provides guidance on the use of long-life coatings for concrete and masonry.

First published as AS/NZS 4548.1-1999.