Sheets of drywall and screws for the walls and ceiling of a room.
AdvertisementA 12x10 ft room with 8 ft walls, one door and one window needs 11 sheets of 4x8 drywall for the walls.
We take the wall area (perimeter times height), subtract 21 sq ft per door and 15 sq ft per window, add the ceiling if you include it, add 10% for cuts, and divide by the sheet size. Screws are estimated at about one per square foot of drywall, or 32 per 4x8 sheet.
4x12 sheets mean fewer seams to tape and are faster on long walls, but they are heavy and hard to carry alone. 4x8 sheets are easier for one person and fit in most cars.
About 32 screws for a 4x8 sheet on walls with studs 16 in apart: screws every 12 in along each stud. Ceilings need a little more, about every 8 in.
With 8 ft walls, one door and one window, about 12 sheets of 4x8 for the walls, or 17 if you also cover the ceiling. That includes 10% extra for cuts.
1/2 in is standard for walls. Use 5/8 in for ceilings with framing 24 in apart, and fire-rated 5/8 in Type X where codes require it, such as walls shared with a garage.