Tile Adhesive and Grout Estimator

Adhesive coverage depends mostly on the notch trowel and bed thickness, which in turn depends on tile size. Small tiles use a thin bed, standard tiles a medium bed, and large-format tiles a thick bed to fill the back fully and avoid voids.

We apply the typical coverage rate for each bed thickness and add a 10% contingency, because nobody wants to run out of adhesive halfway across a floor.

Grout quantity comes down to how much joint there is to fill. Smaller tiles have more joints per square metre, so they use more grout, while large tiles with narrow joints use very little.

The estimate uses the standard industry formula based on your tile size, joint width and tile thickness, then shows a small range because grout mixing and waste vary in practice.