Plasterboard for a 7 × 5 m room
Counts are for a 7 × 5 m room with a 2.4 m ceiling, standard 2400 × 1200 mm sheets (2.88 m² each) and 10% waste. Doors and windows are not taken off, because the off-cuts are used by the waste allowance.
| What you are boarding | Area | Sheets | Screws | Jointing tape |
|---|---|---|---|---|
| Walls and ceiling | 92.6 m² | 36 | 1,140 | 111 m |
| Walls only | 57.6 m² | 22 | 697 | 69 m |
| Ceiling only | 35.0 m² | 14 | 444 | 42 m |
Other sheet sizes
| Sheet size | Sheets needed (walls and ceiling) |
|---|---|
| 2400 × 1200 mm | 36 |
| 3000 × 1200 mm | 29 |
| 1800 × 900 mm | 63 |
Waste allowance
| Waste | Sheets (walls and ceiling) |
|---|---|
| 5% | 34 |
| 10% | 36 |
| 15% | 37 |
Use the UK plasterboard calculator to change the ceiling height or the sheet size. Board the ceiling first, stagger the joints and use 12.5 mm board at 400 mm centres. Painting afterwards? Try the paint calculator.
Want to change anything else? The calculator above is the full Plasterboard Calculator: edit any number and the results update instantly.
Tools & materials for this project
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Frequently asked questions
How many sheets of plasterboard for a 7m x 5m room?
36 standard 2400 × 1200 mm sheets for the walls and ceiling of a 7 × 5 m room with a 2.4 m ceiling, including 10% waste. The area is 92.6 m².
How many sheets for just the ceiling?
14 sheets for the 35.0 m² ceiling, and 22 for the walls alone. The two do not add up exactly, because each is rounded up to whole sheets.
How many screws and how much tape?
About 1,140 screws, which is about 11 per m² of board, and 111 m of jointing tape (2 rolls of 90 m).
Related sizes and guides
Related sizes
Estimates only. Results assume standard materials and simple shapes. Supplier products vary, and the final call on quantity, structure and safety is yours. Check your local code and your supplier's guidance before ordering.