I’ve always just used whatever notched trowel I had in the past but I want to do things right and I am going to be installing 120cm x 60cm porcelain tiles on walls and floors. It’s approximately 9/10mm thick. I currently have a 6mm notched trowel but is this too small? For bigger tiles should the notch size be different? I’m not sure about when to use what sizes. Not sure about the link between tile size and trowel notch size.
