I’ve been looking for a way to secure some display elements to my tile roof in a way that won’t damage the tiles.
This galvanised metal strip could be used to slip under a tile.
It’s the “Carinya 20 x 600mm Flat Make-a-Bracket” from Bunnings.
Each 600mm length should be enough for at least 3 pieces.
They have plenty of other lengths and widths available too.
I also found this “Suntuf Access 25mm 20m Purlin Tape” at Bunnings.
It has a self adhesive backing on one side.
Using this on the metal strips above may hold them under the tile firmer.