Three square waterline tiles above the waterline above the skimmer box have come off, which glue is useful
Hi @johnnyAU,
The smallest amount of adhesive I could find that states it is suitable for use around a pool is this https://www.bunnings.com.au/dunlop-2kg-tile-all-tile-adhesive_p6650077 .
You'll want to start by removing any remaining adhesive and cleaning up the surface. This can be done using a paint scraper to remove the bulk and then using a bit of sandpaper to tidy up.
Once clean, give your adhesive a mix to ensure it is smooth and spreadable, then use a https://www.bunnings.com.au/qep-6mm-square-notch-plastic-adhesive-spreader_p6821486 to apply it to the surface with the notched side, then apply a thin smooth layer of adhesive to the back of the tile before pressing them together and compressing the notches. This compression will help the tile suction to the surface and ensure a quality installation.
After this, apply some white grout between the tiles, and tidy up with a damp sponge.
Let me know if you have any further questions.
Jacob