Silicone works like a champ, I did a bath remodel about 2 years ago, they had a pedestal sink on ceramic tile. They set the pedistal in silicone, I had a devil of a time getting it off the tile. Just to see how well it was stuck I kicked the top of the pedestal and it pulled the face off the tile. In a perfect horseshoe to match the bottom of the pedestal half way into the tile.