Hi there, i used the wrong stuff i bought wrong thing for tiles, and numpty me i wonder why tile never stuck, under the tile is just a mess with grout, before anyone says i am a plonker, i know myself lol , i have googled it couple ideas but few i am thinking might make it even worse, boiling water and cup suger, that sounds to me making it worse, does anyone know a sure fire way that will disolve it, its just a complete mess..i used slates on bathroom floor, another idiot idea from me.thanks