AEC & Built Environment Insights
Actionable code updates, project tips and product news—served weekly
Waterproof vs Water-Resistant: The AS 3740:2021 Materials Lists and the Compatibility Chain
AS 3740:2021 sorts every wet-area material into waterproof or water-resistant, in Clause 3.3. The lists as a working reference, the NCC clauses that decide which label applies, and the compatibility chain in Appendix E that most failures break.
AS 3740:2021 Explained: Scope, Changes from 2010, and How the NCC Calls It Up
AS 3740:2021 is the edition every NCC 2022 and NCC 2025 wet-area provision points at. What it covers, what changed from 2010 with clause references, which NCC clause calls it up for your building class, and the numbers to keep at hand.