This is a great product called Stik wood. Very easy to install. The wood comes in random lengths similar to a hardwood floor with 3 strips of self stick tape on the back. Great way to dress up a wall.
This what happens when you don’t keep up with the grout and caulking in an older tub. The water slowly dissolved the Sheetrock behind the tile eventually causing the tiles to fall off of the wall. The tiles had to be removed and the Sheetrock replaced. The tiles were re installed and grouted properly.