Metal Roof Painting Cost Calculator

Painting a metal roof not only improves its appearance but also extends its life by protecting it from rust and corrosion. With our Metal Roof Painting Cost Calculator, you can quickly estimate the total cost of your roof painting project based on area, paint coverage, number of coats, and labor cost.

Formula 1: Calculate Paint Required

To determine how much paint you’ll need for your metal roof:

$\text{Paint Required (gallons)}=\frac{\text{Roof Area (sq ft)}\times \text{Number of Coats}}{\text{Coverage per Gallon (sq ft/gallon)}}$

Formula 2: Calculate Total Paint Cost

Once you know how much paint is needed, multiply it by the cost per gallon:

$\text{Total Paint Cost (\$)}=\text{Paint Required (gallons)}\times \text{Paint Cost per Gallon (\$)}$

Formula 3: Calculate Total Labor Cost

Labor costs depend on the roof area and the labor cost per square foot:

$\text{Total Labor Cost (\$)}=\text{Roof Area (sq ft)}\times \text{Labor Cost per sq ft (\$)}$

Formula 4: Calculate Total Metal Roof Painting Cost

The overall cost is the sum of paint and labor costs:

$\text{Total Cost (\$)}=\text{Total Paint Cost (\$)}+\text{Total Labor Cost (\$)}$

Formula 5: Calculate Cost per Square Foot

To find the painting cost per unit area:

$\text{Cost per sq ft (\$/sq ft)}=\frac{\text{Total Cost (\$)}}{\text{Roof Area (sq ft)}}$

Example Calculation

Let’s say you have the following data:

• Roof Area = 2,000 sq ft
• Paint Cost per Gallon = $40
• Coverage per Gallon = 300 sq ft
• Labor Cost per sq ft = $1.50
• Number of Coats = 2

Step 1: Paint Required

$\text{Paint Required}=\frac{2000\times 2}{300}=13.33\text{ gallons}$

Step 2: Total Paint Cost

$\text{Total Paint Cost}=13.33\times 40=533.20$

Step 3: Total Labor Cost

$\text{Total Labor Cost}=2000\times 1.5=3000$

Step 4: Total Cost

$\text{Total Cost}=533.20+3000=3533.20$

Step 5: Cost per Square Foot

$\text{Cost per sq ft}=\frac{3533.20}{2000}=1.77$

Final Result:

• Total Paint Required: 13.33 gallons
• Total Paint Cost: $533.20
• Total Labor Cost: $3,000
• Total Project Cost: $3,533.20
• Cost per sq ft: $1.77/sq ft

FAQs

1. Does roof color affect paint cost?

Yes, darker colors may require more coats or higher-quality paint, increasing total cost.

2. How often should I repaint a metal roof?

Typically every 10–15 years, depending on weather conditions and paint quality.

3. What factors affect labor cost?

Labor cost varies based on roof slope, accessibility, prep work, and location.

4. Is it cheaper to paint or replace a metal roof?

Painting is significantly cheaper and can extend your roof’s life by several years before replacement is needed.