Estimate sheet count and purchased coverage from net area, sheet dimensions, layers and waste.
Results are for information and preliminary estimation. For critical technical work, manufacturer data, local codes and qualified professional review take precedence.
Sheets = net area × layers × (1 + waste) / sheet area, rounded up. For partitions, account for both faces when applicable.
Example: 30 m², 1.2 × 2.5 m sheets and 10% waste requires about 11 sheets.
Renovation estimates are most sensitive to measurements, product coverage and waste allowance. Before ordering, verify the result against the actual m²/L, m²/pack or unit coverage printed on the product.
Yes, if both faces are boarded, include both surface areas.
Large openings can be subtracted; small cuts may be offset by waste allowance.
Tell us if a calculation is unclear, incomplete or appears incorrect.