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.
Profiled closures are available for all profiles. As they restrict the free movement of air, their use should be restricted to where their use is required for weatherproofing or other reasons, such as maintaining internal pressures.
High fronted spoutings or scribed, ventilated metal closures are the preferred methods of preventing ingress of wind-blown moisture; and for vermin, an eaves comb which self-adapts to any profile.
Profile closures should be a closed cell type rather than bitumen impregnated open cell foam.
Filler blocks should be used compressed between the sheets and supports or flashing and should be secured by the cladding fastener or adhesive sealant