After some 18 months much of the the silicone has let go from where my cut tiles meet the shower tray on the tile edge only, not from the tray.
I have removed the old silicone and intend to clean all accessible surfaces with methylated spirit before re-applying silicone. Do I need to apply tile sealer to the cut edges of tiles to improve silicone adhesion? Will tile sealer damage the tray?
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