Generally, grout is a mixture of cement, sand, and water or chemicals used to fill gaps. They are commonly used in the repair of concrete cracks, fill seams and gaps in tiles, seal and fill gaps for waterproofing, as well as for soil stabilization.

Grout fills in the spaces between tiles. It is essential for creating a seamless tile appearance, as well as protecting both your tiles and the surfaces underneath. It prevents moisture from seeping into the substrate, straightens tile lines, and keeps tiles from cracking or rubbing against each other.