Retile, regrout
Large job to clean up, relay and regrout some tiles that had been laid sloppily and without ply underlay in parts (Straight onto floorboards). There was a lot of old adhesive to remove and spots of paint. Many of the tiles had come loose, and some had been laid with a 40mm layer of tile adhesive! Problems fixed and I was happy with the end result, as was the customer. Always lay tiles onto something solid!