Preparing your bathroom for peel and stick tile is a simple process that can be completed in a few hours. The first step is to clean the surface you will be tiling. This can be done with a household cleaner and a sponge or cloth. Next, measure the area you will be tiling and cut the tiles to size using a sharp knife or tile cutter. Once the tiles are cut, remove any backing paper and apply them to the surface starting at one corner and working your way out. After all of the tiles are applied, use a roller or hand brush to smooth them down and ensure there are no air bubbles. Finally, grout the tiles using a siliconized acrylic caulk in either white or clear.