Bathroom Tile, Waterproofing and Adhesive Calculator
Plan floor and wall tile boxes, waterproofing compound and adhesive for a complete bathroom renovation.
Formula
Planning estimate. Check product specifications and local requirements before purchasing.
Worked example: Bathroom Renovation Project Calculator
Measurements in this example
| Length | 3 m |
|---|---|
| Width | 2.4 m |
| Tiled wall height | 2.4 m |
| Openings area | 1.9 m² |
| Floor tile coverage per box | 1.44 m² |
| Wall tile coverage per box | 1.2 m² |
| Waterproofing consumption | 1.5 kg/m² |
| Tile adhesive consumption | 4.5 kg/m² |
| Waste allowance | 12 % |
Calculated quantities
| Floor tile boxes | 6 |
|---|---|
| Wall tile boxes | 23 |
| Waterproofing material | 52.4 kg |
| Tile adhesive | 157.3 kg |
What to check
This calculation uses: Length, Width, Tiled wall height, Openings area, Floor tile coverage per box, Wall tile coverage per box, Waterproofing consumption, Tile adhesive consumption, Waste allowance. It returns: Floor tile boxes, Wall tile boxes, Waterproofing material, Tile adhesive.
Measure floor and every tiled wall separately, using the finished tiled height. Record doors, windows, bath panels and service boxes before combining the surfaces.
Keep floor and wall products separate when format, box coverage, slip rating or finish differs. A feature wall may also need its own batch.
Plan the starting lines around the bath, shower, niches and visible corners. Small strips and repeated penetrations increase practical waste.
Use the units beside each field. The values in the worked example are starting inputs; replace them with your measurements and the specifications of your material.
Compare alternatives
Open a tool, enter your measured dimensions, then save an estimate. Keep another version if you want to compare products or allowances.