Trowel size help

[Bazzer39]

Hi
Some help please
What trowel notch size would I need for floor porcelain tiles @ 90cm x 15cm? Would 10mm square be ok? Also is it best to back butter the tile or not needed on this size tile?
Thanks

 

[Dave]

Hi
Some help please
What trowel notch size would I need for floor porcelain tiles @ 90cm x 15cm? Would 10mm square be ok? Also is it best to back butter the tile or not needed on this size tile?
Thanks

Yep ok and back skim tiles 👍