How many sheets of drywall for a 10×12 room with 9' ceilings?
Answer
12 sheets (4×8)
Wall area: 396 sq ft (356 after openings)Joint tape: 2 rollsJoint compound: 20 lbs
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How We Calculated This
Sheets = (Wall Area × 0.9) / 32 sq ft per 4×8 sheet
Walls: 2 × (12 + 10) × 9 = 396 sq ft. After 10% openings: 356 sq ft. ÷ 32 sq ft per sheet = 12 sheets
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Calculated using verified formulas. Last updated March 2026.