I'm getting ready to tile my bathroom floor and tub surround. Our house is older (about 45 years old) and the walls/floors aren't exactly perpendicular. With that in mind, I'm wondering if I should align the tile to be exactly level with the floor/tub or align them so they're exactly level with the wall side (and slant slightly against the base).
Apologies if this doesn't make sense. I'll try to get some pictures up but the difference isn't major here so it might not be noticeable in a wide angle picture.