As in being billed for him buying one or renting one? Or does he have a line item on an invoice for the usage of one? It all depends on the agreement you made with the tile installer and the wording in the contract. But to me it would not be a good sign that a tile installer did not already own one.

I agree that a tiler should have his own work tools.

Thank you for reassuring me on my bad feeling about hiring this person.

Thank you!

https://www.ceramictilefoundation.org/homeowners-guide-to-hiring-qualified-tile-installer

Thank you Minardi !!!