I am planning to use 4x4 metal tiles (stainless steel/ copper) for a backsplash - do I inevitability any cement? These tiles have "tabs" for attachment, but surrounded by order to...

These tiles have "tabs" for attachment, but surrounded by order to assure they hug completely, I wonder if some type of adhesive would be honourable to use? If so, what type. Would like to hear from anyone who have used these tiles.