AS/NZS 4548.1:1999 (R2013)
AS/NZS 4548.1:1999 (R2013)
Guide to long-life coatings for concrete and masonry Wall coatings - Latex extensible
Standards Australia
Table of Contents
Abstract
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.
RECONFIRMATION NOTICE
Technical Committee CH-003 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change.
Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 30 May 2013.
Approved for reconfirmation in New Zealand on behalf of the Standards Council of New Zealand on 26 August 2013.
The following are represented on Technical Committee CH-003:
Australasian Corrosion Association
Australian Paint Approval Scheme
Australian Paint Manufactures' Federation
Australian Pipeline Industry Association
Institution of Professional Engineers New Zealand
Master Painters New Zealand Association
Water Corporation Western Australia
Scope
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.
General Product Information
| Document Type | Standard |
| Status | Current |
| Publisher | Standards Australia |
| ProductNote | Reconfirmation Notice 13-09-2013 |
| Committee | CH-003 |
| Supersedes |
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