Sanded v. Un-sanded Grout.

Sanded vs Un-sanded Grout: Sanded grout is a form of grout that is good for large grout joints; a general rule of thumb is any grout space that is larger than ⅛”. The sand in grout helps grout stay in between the joints. Sanded grout comes in both dry and pre-mixed forms. Sanded grout is very versatile, and can be used in virtually any project whether inside or outside. Sanded grout does need to be sealed in order to properly protect against dirt, spills, and discoloration. Sanded grout cannot be used with certain stone materials, specifically marble, as the sand can scratch your stone. Unsanded grout is like sanded grout but made without sand. For smaller grout joints under ⅛”, use unsanded grout. You can’t use sanded grout in small joints because not enough grout will make up the space, instead being filled with too much sand. This can lead to instability. Unsanded grout is stickier than sanded grout — perfect for those smaller grout spaces. Like sanded grout, unsanded grout does need to be sealed to protect against damage caused by stains, spills, and even UV lighting.