How many sheets of drywall do I need for a room?
A 12 x 12 ft room with 8 ft walls, one door and two windows needs about 17 sheets of 4 x 8 drywall for the walls and ceiling, including 10% extra for cuts.
The table assumes 8 ft walls, one door, two windows and 10% extra for cuts.
| Room | Walls only (4x8) | Walls and ceiling (4x8) | Walls and ceiling (4x12) |
|---|---|---|---|
| 10 x 10 ft | 10 sheets | 13 sheets | 9 sheets |
| 10 x 12 ft | 11 sheets | 15 sheets | 10 sheets |
| 12 x 12 ft | 12 sheets | 17 sheets | 11 sheets |
| 12 x 14 ft | 13 sheets | 19 sheets | 13 sheets |
| 14 x 16 ft | 15 sheets | 23 sheets | 15 sheets |
| 16 x 20 ft | 19 sheets | 30 sheets | 20 sheets |
4x8 or 4x12?
Longer sheets mean fewer seams to tape and a smoother finish, but a 4x12 sheet of 1/2 in drywall weighs around 70 lb and needs two people and a straight path into the room. 4x8 sheets fit in more vehicles and up more stairs.