Tile Waste Factor: How Much Extra Tile Should You Buy?

Quick Answer

Buy 10% extra tile for simple straight layouts, 15% for rooms with many cuts, and 20% for diagonal layouts, showers, herringbone, or complex patterns.

Use the [Tile Calculator](/tile-calculator) to adjust the dimensions, waste factor, product coverage, and unit price for your exact project.

Formula

``

Tile to buy = calculated tile x (1 + waste percentage)

``

Example Estimate

1. Calculate base tile area.

2. Choose 10%, 15%, or 20% waste.

3. Multiply by the waste factor.

4. Round up to full boxes.

Reference Table

| Project | Extra tile |

|---|---:|

| Simple floor | 10% |

| Bathroom floor | 10% to 15% |

| Shower walls | 15% to 20% |

| Herringbone | 15% to 25% |

Practical Tips

- Buy from the same lot number.

- Save extra tile for repairs.

- Use more waste for large-format tile cuts.

When to Round Up

Round up when the project has cuts, corners, fragile materials, uneven surfaces, delivery minimums, or any chance that matching the same product later will be difficult.

Next Step

Open the [Tile Calculator](/tile-calculator), enter your exact numbers, and save the estimate before buying materials.