In my existing home, can you make the concrete polish the same level?
Usually, we would recommend placing some type of strip over the small lip between concrete and tiles to circumvent a trip hazard. The difference in heights can be as small as 1 – 2mm all the way up to approximately 10mm. The grinding machines can be directed along a straight line, but it’s not an exact and clearly delineated line, as that is not the way they operate.