What is the typical depth of grout lines for standard tile installations?

In standard tile installations, the typical depth of grout lines is generally between 1/8 inch to 1/4 inch. This range allows for sufficient flexibility while accommodating slight variations in tile size and ensuring a smooth, visually appealing finish. Grout lines in this range also provide enough space to allow the grout to properly fill and adhere, which helps to prevent cracking and enhances the overall durability of the tiled surface. A grout line that is too narrow may not effectively hold the grout in place and could lead to issues over time, such as cracking or the grout being dislodged.

Some options suggest depths that are either too shallow or overly large, which may not be practical for standard projects. Grout lines that are significantly narrower (like those smaller than 1/8 inch) would not adequately support the installation, while larger grout lines (beyond 1/4 inch) could result in a less refined look and increased susceptibility to dirt accumulation and staining.