I have been asked to attach a small solar charger panel for trickle charger (maybe 6 inch square) thingy to a garage roof which has concrete type (not slate) roof tiles. I wont see the job until Saturday so cant be 100% sure about anything. Whats the best way to attach it, I first thought silicone but I doubt that would adhere to the tiles, Then I am thinking just slip the bracket (presumably it has one) under a tile.
Any other thoughts? Could I drill into the tiles and use a small screw?