I used this to adhere a flat-backed corner shelf to the a wall in my shower. I used washers inserted halfway into the shelf's back edge with epoxy to hold the shelf to the wall while it set, but the majority of the back edge of the shelf was attached with this silicone adhesive. While there is also epoxy involved, I do believe the silicone is creating a strong adhesion to the tile. My experience with 100 silicone as an adhesive in another shower installing a shelf (without the washers and epoxy) was also good, with years of usage and the shelf remaining solidly attached.
Rating:
[5 of 5 Stars!]