This is a test of commonsense. Complete the next sentence:

How to regrout tile
Decide what type of grout you will be using.
This is dependent on the size of your grout's joint (the space between the tiles where the grout lies). There are two types of grout for regrouting tile: sanded and unsanded.
If your grout joints are larger than 1/8 inch (. 3175 cm) use sanded grout to fill in the space; if your joints are going to be less than 1/8 inch (.