Re: Fireback as a backsplash
If the piece has no cleats on the back to hang it, then I think I would go with an aluminum angle screwed to the wall under the piece, then adhesive to stick it to the wall. The angle will support the weight, the adhesive will keep it from going anywhere.
What kind of adhesive, you ask? Probably something along the lines of mirror setting or baseboard adhesive, as long as they're rated for metal. These adhesives stay somewhat pliable, which I think would be critical for this application.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!