Been doing C c for years but did Jamie's course at Restroremate which was great so took on a gym hall which had 200 sq mtr vinyl floor. Had to strip the floor as it had black lines painted on it which would only come off with stripper. Neutralised the floor then applied Tight Shine. After the first 2 coats of T.S it still had a patchy look about it but by the 4th coat it was all over glossy. We then applied a 5th coat and went back the next day and it was looking great. My only thought was how do I know how many coats to put on? It was all over glossy by the 4th and we put another one on after that but should be have put on a 6th? We had been at it for 12 hours solid by this time and were knacked but just wondered for future reference. Also the black scrub pads were brand new when we started but they had got very dirty with the paint stripped off. Can we just wash them and use them again ? What is their average life ?