About this calculator
Material for exterior stucco, interior veneer plaster or patching work.
How it’s calculated
Coverage rates used: an 80 lb bag of stucco base covers about 25 sq ft at ⅜" (two base coats: scratch and brown), an 80 lb finish bag about 70 sq ft at ⅛", and a 50 lb bag of veneer plaster about 250 sq ft.
Worked example
With these inputs:
- Wall length
- 30 ft
- Wall height
- 8 ft
- Openings to subtract
- 0 sq ft
- System
- Three-coat stucco (7/8")
- Waste allowance
- 10%
the result is:
- Bags needed
- 22 × Stucco base coat, 80 lb + 4 × Stucco finish coat, 80 lb + 17 × Metal lath sheet 27"×96"
- Area (incl. waste)
- 264 sq ft
- System
- Three-coat stucco (7/8")
Tips from the trade
- Uneven or chased walls eat more undercoat. Add 10–20%.
- Check the suction of the background before choosing an undercoat.
Common questions
How much does a bag of stucco cover?
An 80 lb bag of base coat covers about 25 sq ft at ⅜", and an 80 lb finish coat about 70 sq ft at ⅛".
Results are estimates for planning and pricing. Check quantities against your drawings, the manufacturer’s data and local building codes before ordering.