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Calculating flooring requirements accurately prevents costly mid-project shortfalls. Different materials have different wastage allowances.
The Formula
Area = Length × Width | Quantity = Area × (1 + Wastage%) | Tiles: 10-15% waste | Carpet: 5-10%
Standard formula used by professionals worldwide
Worked Example
Step-by-step
Room 5m×4m = 20m² | Tiles with 12% wastage → buy for 22.4m² | At 800/m² → cost 17,920
Key Points
- Accuracy: Results are as accurate as your inputs
- Units: Always use consistent units throughout
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Frequently Asked Questions
Why does tile wastage exceed carpet wastage?
Tiles must be cut at edges and corners, creating more waste. Diagonal laying increases waste to 20%+.
Do I need to buy extra boxes?
Always buy full boxes. Better to have a few spare tiles for future repairs than to run short.
What is the cost difference between materials?
Ceramic tiles: budget option. Porcelain: mid-range. Natural stone: premium. Hardwood: highest.
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