Home Back

Benjamin Moore Exterior Paint Calculator

Benjamin Moore Exterior Paint Formula:

\[ \text{Paint (gallons)} = \frac{A}{C} \times N \]

square feet
square feet per gallon
coats

1. What is the Benjamin Moore Exterior Paint Calculator?

The Benjamin Moore Exterior Paint Calculator helps determine the exact amount of paint needed for exterior painting projects. It calculates gallons required based on surface area, paint coverage rate, and number of coats needed for optimal coverage.

2. How Does the Calculator Work?

The calculator uses the Benjamin Moore paint formula:

\[ \text{Paint (gallons)} = \frac{\text{Area (square feet)}}{\text{Coverage Rate (square feet per gallon)}} \times \text{Number of Coats} \]

Where:

  • \( A \) — Total surface area to be painted (square feet)
  • \( C \) — Coverage rate of the paint (typically 250-400 sq ft/gallon)
  • \( N \) — Number of coats required for proper coverage

Explanation: The formula calculates the total paint volume needed by dividing the surface area by the paint's coverage rate, then multiplying by the number of coats for complete coverage.

3. Importance of Accurate Paint Calculation

Details: Accurate paint calculation prevents waste, ensures you purchase the right amount, saves money, and guarantees consistent color throughout your exterior painting project.

4. Using the Calculator

Tips: Measure your exterior surface area accurately. Use the manufacturer's recommended coverage rate (typically 350 sq ft/gallon for Benjamin Moore exterior paints). Most exterior projects require 2 coats for optimal durability and coverage.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical coverage rate for Benjamin Moore exterior paint?
A: Most Benjamin Moore exterior paints cover 300-400 square feet per gallon, but always check the specific product's coverage rate.

Q2: How do I calculate my exterior surface area?
A: Measure length and height of each wall, then subtract window and door areas. For complex surfaces, add 10-15% for trim and details.

Q3: Why do exterior projects usually require 2 coats?
A: Two coats ensure better weather resistance, uniform color, and longer-lasting protection against UV rays and moisture.

Q4: Should I buy extra paint for touch-ups?
A: Yes, it's recommended to purchase 10-15% extra paint for future touch-ups and to account for surface texture variations.

Q5: Does surface texture affect paint coverage?
A: Yes, rough or textured surfaces may require up to 20% more paint than smooth surfaces due to increased surface area.

Benjamin Moore Exterior Paint Calculator© - All Rights Reserved 2025