Corrosion can be caused by using dissimilar metals in contact with, or run-off from, other roof cladding materials.

Designers and tradespeople should be aware of the electrolytic corrosion that can take place when small particles of metal are deposited on another metal, and when the same tools are used with a variety of metals. See Compatibility.

For maximum durability, no water should be allowed to penetrate between stacked panels, strips, profiled sheets or coils during storage and transportation. In high humidity with the simultaneous exclusion of air, white rust will develop on the surface of zinc and zinc coated cladding, and aluminium and copper will also suffer permanent staining. All metals in storage should be kept dry. See Acceptance Of Materials.


Clause Number: 
Revision Category: 
0 - Clause Removed
Revision Detail: 

Clause removed during a comprehensive revision of Standing Seam Cladding. For durability issues, see Durability.

Draft Clause: