Tile Adhesive & Whole Bags

When to use it

Plan one adhesive product for a known tiled area. Read consumption in kg/m² from its data sheet for the intended installation. Do not use the tile order area, which may include spare tiles and cutting waste.

Example prices in USD; replace them with your own quotes. All dimensions use metric units.

Related calculation: Tile Quantities & Full Boxes.

Inputs

USD

Calculation method

Planned mass = area × consumption × (1 + allowance). Divide by bag mass and round up; multiply whole bags by bag mass and price. Surplus is purchased mass minus planned mass, which already includes the allowance. The example needs 88 kg: 5 bags buy 100 kg, leaving 12 kg beyond the plan.

20 [Tiled area m²] × 4 [Product use kg/m²] × (1 + 10 [Extra allowance]%) → Planned adhesive kg

ceil(Planned adhesive kg/20 [Bag mass kg]) → Whole bags

Whole bags × Bag mass kg → Bought mass kg

Bought mass kg-Planned adhesive kg → Planned surplus kg

Whole bags × 18 [Bag price USD] → Purchase cost USD

Change one input

Change only the tiled area from 20 to 30 m². Planned mass becomes 132 kg and the order becomes 7 bags; 8 kg remains beyond the plan.

Results are displayed to at most two decimal places; later formulas use unrounded values.

Scope and limits

• Use actual tiled area and product-specific consumption.
• Allowance is extra to theoretical use.
• One bag size; excludes grout and labour.

Area, consumption and bag mass must be positive; allowance and price nonnegative. The 4 kg/m² and 10% are illustrative, not application instructions. Bed thickness, substrate and installation method affect consumption. Use powder mass as sold, not mixed mortar weight. This does not select adhesive, estimate grout or guarantee leftovers.

Sources

Download and import into Calvance to edit the numbers. The canvas does not reject every invalid input; check the stated ranges.

Common questions

My label gives m² per bag. What do I enter?

Divide the bag mass by its stated coverage to obtain kg/m², under the same application conditions. Do not enter m²/kg in the consumption field.

Does this include tile cutting waste?

No. Start with actual surfaces being tiled; enter adhesive handling allowance separately.

How to import your template

We recommend using the latest version of Calvance.

1. Save the file. Choose Download template and save the .calvx file to Files on your iPhone or iPad. From a computer, you can send it to your device with AirDrop.
2. Open Import. In All Canvases in Calvance, tap the add button to open the template screen, then choose Import.
3. Choose the file. Select the saved .calvx file to create your own canvas. Importing uses one canvas from your allowance.
4. Edit and check. Check the results against the worked example, then add your numbers. Duplicate the canvas to keep different versions.

Download .calvx file