Just pick up samples of tiles you like and see if they stain. I have unglazed porcelain tiles in the kitchen an they haven't stained with red wine or anything else. I used an Italian company called Cerdonomous.
But best thing to do is just try out different tiles with the dye.
I think you'll have more of an issue with the grout then the tile.
Set up two tiles with a grout in place between them. Seal the grout with a few coats of sealer, then do the experiments.
The grout will need to be sealed on a regular schedule.
Ron
But best thing to do is just try out different tiles with the dye.
I think you'll have more of an issue with the grout then the tile.
Set up two tiles with a grout in place between them. Seal the grout with a few coats of sealer, then do the experiments.
The grout will need to be sealed on a regular schedule.
Ron