Colin came late,and unprepared, forgetting to bring some tools. He didn't even bring a broom to sweep up. He gouged the adjacent wood floor with his machinery, re grouted, but didn't wait for it to dry before applying the sealer, so 3 weeks later the grout has all come off in chunks. I had him go over many spots that he missed, and still the finish is inconsistent. Took too long. Left a horrible mess behind.