The following are deemed waterproof: stainless steel; copper of at least 99.9 % purity to material designation 110 or 122 of AS 1566; flexible waterproof sheet flooring with sealed and welded joints meeting AS/NZS 4858 (no waterstop is then needed at the general room doorway); wet area membranes meeting AS/NZS 4858; glass to AS 1288; and PVC meeting AS 3500.2.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.