I f your old ceramic tile is worn or dated, you can lay new tile right over the old, and avoid the huge job of tearing out the old tile. In fact, pros do it all the time. But this ...

Draw a scale plan (1 ft. equals 1/2 in.) of your kitchen on graph paper and add the border. Draw a grid of 1/2-in. squares on tracing paper. Shift the tracing paper around on top of the plan to ...