Non-combustible external walls:

The following solutions presented have been designed to meet current deemed to satisfy requirements for non-combustible construction as required for type A and type B wall constructions. Each system is suitable for particular situations, structures,
and climates and should be read in conjunction with the relevant design in our comprehensive system solutions technical library.

Legacy problems with non-combustible wall designs. There is an increasing awareness that walls built prior to NCC 2019 are exhibiting moisture problems related to condensation. Furthermore, the thermal performance of many buildings is not meeting consumer expectations or the modelling used to design them. This is unsurprising, as earlier versions of the NCC have not fully accounted for thermal bridging or addressed condensation risk, other than in nonmandatory guidance. As combustible cladding, insulation and other non-compliant materials have been identified within type A & type B wall constructions, Australia is going through a costly and painful process to rectify these matters. The industry has an obligation to ensure that it does do not leave a secondary legacy of other problems.