I'm redoing my bathrooms and the original flooring looks like it was rolled out vinyl flooring, secured with some form of glue. Previous owners put vinyl tiles (12" squares) on top of this. I've ripped out all of this down to the concrete slab.
I'm not thinking that these 12" self stick vinyl tiles I have are going to stick very well to concrete by themselves, so what should I use to make sure they don't start popping up? Some form of glue, or do I lay down some type of subfloor first?
If I do a sub floor, what should it be and how do I secure that to the concrete.