The calculation, explained.
Required coverage = net area × (1 + allowance/100). Whole packs round up from required coverage ÷ pack coverage. Purchased coverage can exceed required coverage.
Review the example assumptions and results
- Net area
- 120 ft²
- Extra material
- 10 %
- Coverage per pack
- 20 ft²
- Material required
- 132 ft²
- Purchase packs or sheets
- 7
- Purchased coverage
- 140 ft²
How this tool works
Adjust the labeled inputs to see a new calculation. Units and assumptions are shown beside each field. Printed and copied results use the same calculation.
This is a planning estimate, not a structural design, permit document or binding quote. Check product specifications and actual site measurements.
A worked example for this tool
ConstructionHow Much Extra Flooring Should You Buy?
Extra flooring is a purchasing assumption for cuts, damage and packaging. It is not a universal fixed requirement.
Read the worked example ↗Keep going
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