Code of Practice v3.0 Online
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.
COP v3.0:internal-moisture
View Whole Section for Internal Moisture
The science of internal moisture control is concerned with the need to manage and control condensation, mould growth, and corrosion.
The outdoor environment, the building design, and occupant behaviour affect humidity in the living spaces, which ultimately affects humidity in the ceiling space.
This section of the COP focusses predominantly on managing humidity in the ceiling space of dwellings. Shorter sections also cover the design of non-residential roof and wall cladding, which may also be affected by excessive internal moisture.