Mismatch the Trowel Size
Make sure the trowel you use for the project matches the size of the tile. Larger tiles need a deep layer of thin-set, so you need a trowel with deep notches. When shopping for thin-set for larger tiles make sure the bag has terms such as “medium bed,” “large tile” or “large format” on the bag label.
Crack the Tile
Depending on the material they’re made from (think porcelain), tiles can easily crack. Too many ruined tiles can become expensive and wasteful. There are a few preventative steps to take to reduce the number of cracked tiles. The best tool to use when cutting tile is a diamond wet saw. When using the saw, make sure to apply slow, even pressure in order to create a precise cut.