The Code sets performance, not products
The NCC states performance requirements for weatherproofing and wet area construction. Deemed-to-Satisfy provisions then reference Australian Standards as one way of meeting them. A product is never compliant on its own — the installed system, its detailing and its context determine whether a requirement is met.
Which provision applies depends on the element
Internal wet areas, external above-ground membranes and below-ground structures are treated differently. No single Standard governs every waterproofing application, and the relevant provisions differ between building classes and between new work and remedial work.
Who determines compliance
Compliance is determined by the relevant building surveyor, certifier or consultant for the project. VVS installs to the specification, the referenced Standards and the manufacturer's requirements, and documents what was installed.