1. What is the Exterior Paint Calculation?

The exterior paint calculation estimates the number of gallons needed to paint a home's exterior based on square footage. It uses a standard coverage rate of 350 square feet per gallon.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( Exterior\ Sq\ Ft \) — Total square footage of exterior surfaces to be painted
• \( 350\ sq\ ft/gal \) — Standard coverage rate for one gallon of paint

Explanation: This provides a basic estimate of paint needed for one coat. Most projects require two coats, doubling the amount.

3. Importance of Accurate Paint Estimation

Details: Proper paint estimation helps budget accurately, ensures consistent color application, and prevents project delays from running out of materials.

4. Using the Calculator

Tips: Measure all exterior surfaces (walls, trim, doors) and enter total square footage. For irregular surfaces, add 10-15% to your estimate.

5. Frequently Asked Questions (FAQ)

Q1: Is 350 sq ft/gal accurate for all paints?
A: Coverage varies by paint quality and surface texture. Check manufacturer's specifications for exact coverage rates.

Q2: How do I calculate exterior square footage?
A: Measure height and width of each wall, then multiply. Add all wall areas together plus trim and other surfaces.

Q3: Should I buy extra paint?
A: Yes, purchase 10-20% more than calculated to account for touch-ups and waste during application.

Q4: Does this include primer?
A: No, primer calculation is separate. Most surfaces require one coat of primer before painting.

Q5: How does surface texture affect coverage?
A: Rough surfaces like stucco may require up to 20% more paint than smooth surfaces.