Hi all. I had an earlier post about aluminum panels. But now, the company wants to look at everything -- that is, every material that could be a substitute for sheet rock walls. So far I've checked out ACM panels, Ceramicsteel, bead-blasted aluminum, and fiber cement cladding.

Does anyone know about other materials like copper, zinc, nickel, steel sheet? Doesn't matter if it's coated, painted, porcelainized, or natural finish. The criteria is: easy to clean, color range of white to grey, extremely flat smooth surface texture, could be up to 6' wide/unlimited length.

Extra plus for: can be mounted as float system (strut and c-clips, for instance), custom finished very unique proprietary material.

Thanks so much.