Need for commercial tiles: Many wardrobes don’t come with “backing” so it’s exposed directly to your wall! In order to keep everything “enclosed” and weather proof it is best to install tile and “commercial” tile is better performing that basic home tiles which are sometimes sadly “peel and stick”
I used tiles in my semi-modular kitchen shelves too on the wall and floor...bought food grade quality steel baskets .. been 20 years now. Good investment. Never use plastic coated baskets We wash the inside of the cabinets occasionally..good in