Reverse osmosis plugging method (without removal of tiled surfaces)

1. Stop using the bathroom for 2-3 days (you can speed up the evaporation and drying process by utilizing an electric fan).
2. Apply a 1mm-thick wet film of concrete reverse osmosis plugging agent on grout lines between tiles.
3. Allow a drying and penetrating time of at least three days before resuming the use of the bathroom (remaining undried material may be wiped off with a dry cloth).