Lloyd, this looks like 'picture framing' to me. Google 'picture framing tiles' and you will see what this means. As Ray says, a mechanical (rotary) machine will have to re-grind the whole floor to give it a more uniform texture. Diamond pads are used and the whole process is expensive. Did the original tiler leave the sealer overnight to dry? As he as said, it looks like he left the grout washing process a bit too long. The floor does actually look lovely and level with nice crisp grout lines. Good luck. Cheers Sean
