When the tiles can handle foot traffic depends on the type of tile you have installed and your tile installation method. At least, you should wait 24 hours. If possible, keep people off the new tile floor for 72 hours if you used grout. When you walk on the tiles, do not jump on them or put any objects heavier than a few pounds on them until they have healed. Limiting heavy traffic is also a good idea until you have put the appliances back. Heavy traffic can move tiles and crack grout if it has not fully cured. It is best to adopt a “only if necessary” approach to walking on the floor for at least one night.