V-notched trowels are typically only used for smaller, lightweight tiles that you're installing on a wall. This includes small mosaic designs and glass tiles. They don't need as much thinset, so ...

Advertisement - Continue Reading Below 5 Thinset Mix Thinset should be about as thick as peanut butter. When you comb it with a notched trowel, it should flow but still stand up.

Step 7: As you install tile, avoid excess thinset squeezing up between tiles. If this happens, it's a sign you could be applying too much thinset using the wrong notched trowel.