l am tileing a bathroom wall and l am putting mirror tiles in with them.The mirror tiles have self adhesive pads for the walls, but not enough to put them flush with the ceramics.The mirror tile notes say do not use other adhesives as they can harm the silver layer. l was going to pack the mirror tiles out with tile adhesive but having read this and then phoning the adhesive manufactors l decided against this.So what could l use to stick the mirror tiles to wall and mirror as they will need packing out do to uneven walls.The mirror tiles are 15cmx15cm.. 6 of, and 30cmx15cm...4 of. What about no nails would this stick.l need something that will stick and not show through.