Shocking tiling right There!! Never amazes me what some so called tilers will try and get away with. The trouble is, we can all get tared with the same brush! I know i have lost out on jobs to cheaper quotes, because i have been called by the customer to try and sort out the fu** up caused by the jobber who quoted cheaper. String line tiling......cant fault it! 3mm and 4mm yacht cord is perfect. Used it in Norway, 2 men one room, as soon as the base row was set, one guy strung the line, second guy dropped a row on, first guy strung the line and so on..around the whole room, not one wall at a time either! you would be surprised how quick it can be done, and how neat the grout lines are too!!