Help - Tiles falling off

[Time's Ran Out]

I've re read your original post and can see that if you have a receipt for the tiles and adhesive supplied by the same tile shop and on the same ticket, then they are 100% at fault. Even if you didn't prime and the tiles are ceramic (not porcelain) - they are over 50% larger than allowed by all adhesive manufacturers for a tubbed acrylic adhesive.

 

[Rich]

Whatever caused the tile to come away, that adhesive should not have been sold to fix those tiles, so I would be on the phone to who sold it to you.

You will want to get yourself a standard setting, cement based adhesive and defiantly use a larger trowel then 5mm. As said above, try an 8mm and pop a tile off, if you are not happy with how much contact you have between the tile and the adhesive then back butter the tiles as well before pressing/twisting them into the adhesive bed.