We recently had a new toilet installed and the water pipe is supposed to be held on the wall by two brackets. However the toilet had to be installed further from the wall [1] so one of the brackets will not reach the wall.
Bracket screwed to wall by our plumber

Where the other bracket should go

Ideally one would drill into the tiles, insert rawlplugs and screw the board on. However I have never drilled tiles before and I am worried about cracking them. So my plan is to fix a board to the tiled wall and then screw the bracket to this. The board will be 10-15 mm thick and there will be minimal load, the brackets are to stop movement rather than to hold the pipe up.
So I wonder if I could use some sort of adhesive to stick the board to the wall. If so what sort of adhesive would be appropriate.
1. The toilet outlet is intended to go out horizontally through the wall, but the existing outlet is in the floor. To line up with that outlet the toilet had to be moved forward.
Bracket screwed to wall by our plumber

Where the other bracket should go

Ideally one would drill into the tiles, insert rawlplugs and screw the board on. However I have never drilled tiles before and I am worried about cracking them. So my plan is to fix a board to the tiled wall and then screw the bracket to this. The board will be 10-15 mm thick and there will be minimal load, the brackets are to stop movement rather than to hold the pipe up.
So I wonder if I could use some sort of adhesive to stick the board to the wall. If so what sort of adhesive would be appropriate.
1. The toilet outlet is intended to go out horizontally through the wall, but the existing outlet is in the floor. To line up with that outlet the toilet had to be moved forward.
