With vinyl tile the possibility of shifting is also present.
Ceramic tile over pressboard and vinyl.
Over time the likelihood of problems arising from such installation are far higher than if you use a substrate such as concrete which is recommended.
Once the tile is leveled off your next step is to remove the toilet so that the floor can be laid under it not cut around it.
The ceramic tile institute of america recommends against using particleboard as a foundation for ceramic tile in flooring.
Over time the vinyl will sink or be pressed down into the contour of these depressions telescoping the grout joints from the ceramic tile installation all the way up through the vinyl tiles.
Loose lay perimeter bond sheet vinyl can shift beneath the tile installation making it unsuitable as a base for ceramic tile.
Installing over wood.
The main caveat is that all vinyl formats call for a smooth subfloor including sheet vinyl vinyl tile and luxury vinyl planks and tiles.
If the grout lines in the ceramic tile are deep you ll see and feel them under sheet flooring and if you choose to install preglued vinyl tiles they won t stick.
Chipboard cushioned vinyl flooring particle boards of any type oriented strand board osb interior grade plywood tongue and groove planking and hardwood floors are unsuitable substrates for direct installation of ceramic tile.