We have a couple of loose tiles in every room. Quite annoying to walk on, and I remember having the same problem in a previous house which we ignored which finally resulted in every single tile coming loose.
So in the search for an easy bodge/workaround I come across this guy that drilled holes in the grout, then injects epoxy resin thinned slightly with acetone. Makes sense this could work. The video on youtube is not promoting any product, hope it is OK to share as an example?
Has anybody here tried this, or any similar method with products available in Thailand?