AS/NZS 4548.4:1999 (R2013) PDF Download

AS/NZS 4548.4:1999 (R2013) is a standard that provides a guide for the use of long-life, aggregate-filled, textured coatings on concrete and masonry surfaces. These coatings are intended for both exterior and interior use and can be applied using textured roller, hopper spray, or trowel, as per the manufacturer's instructions.

The coatings covered by this standard are classified as paint Type 38 of AS 2311 and correspond to Australian Paint Approval Scheme specification Type 4 of GPC-C-117. They are selected for their aesthetic purposes and their ability to provide relief to underlying surface irregularities. The aggregate used in these coatings can be sand, marble, or other inert mineral constituents.

These textured coatings are typically specified as part of a system that includes a topcoat, as characterized by AS/NZS 4548.2. They offer maximum resistance to moisture ingress and dirt pick-up. It is important to note that these coatings are not suitable for horizontal surfaces where water ponding can occur. Additionally, they are usually specified in systems that include a sealer and multiple coats.

The standard includes additional notes, such as the availability of a test in AS/NZS 4548.5 to check the cure of concrete and masonry surfaces before applying the sealer. Appendix A provides further guidance on the use of long-life coatings for concrete and masonry.