I want to make an outdoor island cook area. I have seen these framed up with metal studs and red metal, and then covered with WonderBoard, then tiled. There would be a backwall that would have a vertical mural on it made of tile scraps.
My question: How long will the Wonderboard and grout last? I live in Las Vegas, where it is dry most of the time. We do get some good rains, so I guess it would get totally wet about six to eight times a year, and thoroughly dry out between. I may put a roof or awning over it, but haven't decided yet. How long do you think the grout and wonderboard will stay in good condition? Will it improve greatly if I cover it from the rain? Any special types of grout or thinset that would be better for outdoor use?
Steve