J
jay
By the looks of the tiles i dont think it would matter if you did get a fuller grout joint as the glaze doesnt go far enough round the tile,
I see this all the time with tiles, Not just cheap tiles either, I think you will just have to live with it.
Regards the adhesive used, Although Greenstar states "Dry Intermittent wet environments" "Domestic Showers with a water proof grout" i would never use this in a shower as it will break down with water & will fail.
Did the tiler use an Epoxy grout?
If he wanted to use a dispersion adhesive then the very least he should have used should have been Bal Whitestar,
This will not break down when in contact with water.
Missed that bit re epoxy grout that would explain why they can recomend despersion adh on tanking . Thanks Robson