Install bathroom tile by preparing a mortar paste and spreading it onto the desired surface. Press each tile into the mortar in the desired pattern, cutting tiles when necessary, until the space is completely covered. Finish the tile with grout to resist water damage and create an even surface.
Clean the floor or wall thoroughly before laying down any mortar or tile to ensure that the tiles have good, even adhesion to the surface. Begin placing tiles in the most easily visible corner of the room, and work in the opposite direction, making note of any tiles that need to be cut in order to fit properly. The tiles should first be laid without mortar to make sure the design looks good and that any tile patterns match correctly. If necessary, rearrange the tiles in a way that is more visually appealing and then begin to mix your mortar according to the manufacturer's instructions.
Spread only enough mortar to place a few tiles at once using a notched trowel at a 45-degree angle. Apply pressure to each tile with a wiggle to make sure the tile is set properly. Use snap cutters, a scoring tool or a tile knife to cut tiles that are too large to fit against an edge. Spread grout across the completed tile job, filling in all of the gaps between tiles. Once the grout is cured, buff the tiles with a cloth to produce an attractive finish.