The NZ Metal Roof and Wall Cladding Code of Practice is a comprehensive design & installation guide, and a recognised related document for Acceptable Solution E2/AS1 of the NZ Building Code.
There is no specific New Zealand Standard for testing sheet roof and wall cladding. The MRM standard is broadly based on the Australian Standards AS 1562.1:2018 and the AS 4040 series. These Standards are inter-related; AS 1562.1 sets out the performance requirements to be achieved using the test methodology of AS 4040.
The MRM standard differs from the above standards in some significant aspects.