Hello fellow HRT members! I need to finish my fireplace box (envelope or whatever its called) which I was supposed to be finished almost 2 years ago (!!!!) and this community has a lot to offer so I figured why not asking! The unfinished look is getting old and on my nerves... The box consists in concrete boards (5/8in thick) supported by a steel structure made from steel studs. Its pretty sturdy and structurally sound. I am wondering how to finish it. I am after a modern look, so anything rustic/traditional wont match the rest of the condo unit. Any suggestions on how you would finish this thing? Looking forward to seeing what you guys/gals are thinking! Cheers!