How Many Plasterboard Sheets for a Wall?
Quick Answer
3 boards for a 3m × 2.4m wall
Based on: standard 2400 × 1200mm plasterboard sheets (2.88m² each), single layer
How We Calculated This
- Wall dimensions: 3m wide × 2.4m high = 7.2m²
- Board size: 2400 × 1200mm = 2.88m²
- Boards needed: 7.2 ÷ 2.88 = 2.5, round up to 3
Note: boards are fitted vertically (2400mm height matches standard ceiling height), so a 3m wall needs 3 boards side by side with one board trimmed.
Common Board Sizes
- 2400 × 1200mm: Standard, fits 2.4m ceiling height
- 2400 × 900mm: Easier to handle, lighter
- 3000 × 1200mm: For higher ceilings
- 1200 × 900mm: For patching and small areas
Board Thickness Guide
- 9.5mm: Dry lining over existing walls
- 12.5mm: Standard walls and ceilings
- 15mm: Enhanced sound/fire performance
- 19mm: Stud partitions at 600mm centres
Fixings Needed
- Drywall screws: ~30 per board (at 300mm centres on edges, 400mm on intermediate studs)
- Screw length: Board thickness + 20mm minimum penetration into stud
Last updated: April 2026