Can the veneer be applied to drywall or metals?
Any of the backed veneers should not be applied directly to drywall. Apply to another substrate first, and then apply to the drywall. Backed veneers have been successfully applied to metals, but only with great care. Experiment first with the particular metal, and remember that it is a non-porous surface and some adhesives may not work with it. Contact your adhesive supplier with specific questions. Pressure sensitive adhesives are not recommended for work with metals.