Galvalume coils should not be used in alkaline environments.
The aluminium in Galvalume coils does not adapt well to this environment, so galvanized steel may be a better choice in this environment.
In addition, if the Al-Zn coating is damaged, its anti-corrosion effect is also poor.
If the product is prone to scratching and indentation, then it is not suitable, and galvanized steel coil may be more suitable as the application material.
Even fastener installation may be enough to damage the Al-Zn coating.