CONSTRUCTION
Grout & Thinset Quantity
Grout mass and bags from the tile size, joint width and thickness with the density you enter, and thinset from the trowel notch and bed factor with its density.
Joint volume and grout mass with bags rounded up, thinset bed volume, mass and bags, the joint share of the floor, the tile count, and the waste allowance applied.
Example: 20 m² of 600 × 300 × 10 mm tiles with 3 mm joints: joint volume 0.0033 m³ → 5.5 kg of 1 700 kg/m³ grout with 10 % waste = 2 × 5 kg bags; a 10 mm notch bed at half depth needs 176 kg of thinset.
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BUILT TO BE UNDERSTOOD
What Grout & Thinset Quantity assumes.
No black-box numbers.
How the result is calculated
Describe the formula and its source.
What this utility does not do
State the limits plainly.
SOURCES
- Joint volume per area = (L + W + j) × j × t ÷ ((L + j)(W + j)); thinset bed = notch × bed factor × area; densities and bag sizes from the product data sheet
Last reviewed 21 September 2026. How results are checked: How we verify.