About this calculator
Bags of cement-based tile adhesive by area and trowel size.
How it’s calculated
TAL gives about 3 kg per m² with a notched wall trowel and about 6 kg per m² with a notched floor trowel for Goldstar 6, sold in 20 kg bags. Actual use depends on the site, so treat it as an ordering guide.
Worked example
With these inputs:
- Measure by
- Length × width
- Length
- 4.5 m
- Width
- 3.6 m
- Trowel notch
- Notched floor trowel (about 6 kg/m²)
- Back-butter tiles (+30%)
- No
- Waste allowance
- 10%
the result is:
- Adhesive needed
- 107 kg
Tips from the trade
- Choose the notch for the tile size: bigger tiles need bigger notches.
- Lift a tile now and then to check for full coverage.
Results are estimates for planning and pricing. Check quantities against your drawings, the manufacturer’s data and SANS 10400 (the National Building Regulations) and your local municipality before ordering.