To calculate the grout coverage:
\[ \text{Grout Coverage} = \frac{\text{Tile Area} \times \text{Tile Length} \times \text{Tile Width} \times \text{Tile Thickness} \times \text{Grout Joint Width}}{231} \]
Where:
Grout coverage refers to the amount of grout needed to fill the joints between tiles. It depends on factors such as tile size, joint width, and tile thickness[^1^][^2^].
Let's assume the following values:
Using the formula:
\[ \text{Grout Coverage} = \frac{100 \times 12 \times 12 \times 0.25 \times 0.125}{231} \approx 1.56 \text{ gallons} \]
With 10% overage, the grout coverage is approximately 1.72 gallons.