You can use a sander on the floors just make sure to go with the grain of the wood and you,ll want to put on two coats of polly after the first coat is dry sand off lightly with fine grain sandpaper always following the grain of the wood then add a second coat. They also make a tile cutter that you just scribe or score a line in the tile then push down on the handle to break it. hope this helps good luck on your project. Tags.