Stucco Calculator
Estimate stucco bags, sand, and cost by coat system
Total exterior wall area to be stuccoed
Stucco system type
Sand
—
cu yd
Stucco Bags
—
bags
Estimated Cost
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USD
Disclaimer: Results are estimates based on standard formulas. Not a substitute for professional advice from a licensed contractor, engineer, or architect. Verify all calculations before making purchasing or construction decisions.
How to Use This Calculator
Stucco material needs scale with the number of coats. A traditional 3-coat system uses far more cement than a 1-coat EIFS assembly.
- Measure the total wall area to be covered
- Choose the stucco system: 3-coat traditional or 1-coat EIFS
- Enter dimensions in the calculator
- Order extra bags for corner beads, control joints, and touch-ups
Expert Insights
Smart analysis for your Siding project
Coat System Tuning
A 3-coat system needs 3x the cement of a 1-coat EIFS job. AI multiplies bag and sand quantities by the correct coat count.
Sand Proportioning
Stucco mix uses roughly 1 cubic yard of sand per 324 sq ft per coat. AI sizes sand delivery to match your batch plan.
Cure & Weather
Stucco needs 48 hours of curing between the scratch and brown coats. Avoid application below 40°F or above 90°F to prevent cracking.
Calculation Formula
Coats N = 3-coat -> 3 | 1-coat EIFS -> 1
Bags = ceil(Wall Area x Coats N / 144)
Sand = ceil(Wall Area x Coats N / 324)
Cost = ceil(Wall Area x $9)
Stucco System Comparison
| System Type | Thickness | Coats | Cost per sq ft | Lifespan |
|---|---|---|---|---|
| Traditional 3-Coat | 7/8 in | 3 | $6-$9 | 50-80 years |
| 1-Coat EIFS | 3/8-3/4 in | 1 | $4-$7 | 30-50 years |
| Acrylic Finish | 1/16 in | 1 (topcoat) | $2-$4 | 15-25 years |
| Stucco Over Foam | 1-1.5 in | 2-3 | $8-$12 | 40-60 years |
Authority References
Our calculations are based on guidelines and standards from these authoritative sources:
- Stucco Manufacturers Association (SMA) — Installation Standards & Specifications. Learn more
- Portland Cement Association (PCA) — Stucco Mix Design Guidelines. Learn more
- EIMA (EIFS Industry Members Association) — EIFS Application Standards. Learn more
Frequently Asked Questions
How many bags of stucco do I need per square foot?
A 3-coat stucco system needs about 1 bag (80 lb) per 48 sq ft of wall, while a 1-coat EIFS system needs roughly 1 bag per 144 sq ft because it applies a thinner base coat.
What is the difference between 3-coat stucco and EIFS?
Traditional 3-coat stucco uses a scratch, brown, and finish coat of cement over wire lath. EIFS (Exterior Insulation and Finish System) is a 1-coat synthetic system over rigid foam insulation that is lighter and more energy efficient.
How much does stucco cost per square foot?
Stucco installation averages $6-$12 per square foot for materials and labor. A typical 1,000 sq ft wall costs $6,000-$12,000 depending on system type and finish.