8×10 room: paint by wall height
| Wall height | Paintable sq ft | Gallons (2 coats) | Buy |
|---|---|---|---|
| 8 ft | 238 | 1.36 | 2 |
| 9 ft | 274 | 1.57 | 2 |
| 10 ft | 310 | 1.77 | 2 |
1 door and 2 windows deducted; 350 sq ft per gallon.
Worked example
Perimeter: 2 × (8 + 10) = 36 ft. With 8 ft walls: 288 sq ft, minus 20 (door) and 30 (two windows) = 238 sq ft. Two coats: 476 ÷ 350 = 1.36 gallons. The ceiling adds 80 sq ft per coat (about 0.46 gallons for two coats).
Frequently asked questions
How many gallons to paint a 8×10 room?
About 1.36 gallons for two coats on 8 ft walls (buy 2).