This installation is for mosaic tiles. It is similar for porcelain tiles, mother of pearl tiles and metal tiles. For wooden tiles, you need an air gun to fix it on the wall firmly. Please do not remove the film on the finish of the tile before you install it. The film can protect the finish of the tile during installation. This installation instruction is only for your reference. You may process it with your own way. Please remember to use mosaic grout to install the tiles, DO NOT use cement. And please use soft tools on tiles finish in case scratching the surface.