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Paint Calculation Formula:
The Exterior Home Paint Calculator estimates the amount of paint needed to cover the exterior of a home based on the home's surface area, paint coverage rate, and number of coats required. It helps homeowners and professionals accurately plan paint purchases.
The calculator uses the paint calculation formula:
Where:
Explanation: The formula calculates the total paint needed by dividing the home area by the coverage rate per gallon, then multiplying by the number of coats for complete coverage.
Details: Accurate paint calculation prevents over-purchasing (saving money) and under-purchasing (preventing project delays). It ensures you have enough paint for the entire job while minimizing waste.
Tips: Measure the total exterior surface area accurately. Check the paint can for coverage rate specifications (typically 250-400 sq ft/gallon). Consider adding 10-15% extra for waste and touch-ups.
Q1: How do I measure my home's exterior area?
A: Calculate each wall's area (height × width), add all walls, then subtract areas for windows and doors. Don't forget gables and trim.
Q2: What is a typical paint coverage rate?
A: Most quality exterior paints cover 250-400 square feet per gallon. Check the specific product label for accurate coverage.
Q3: How many coats are usually needed?
A: Most exterior painting requires 2 coats for proper coverage and durability, especially when changing colors significantly.
Q4: Should I buy extra paint?
A: Yes, purchase 10-15% extra for touch-ups, waste, and future repairs. Keep some for color matching later.
Q5: Does surface texture affect coverage?
A: Yes, rough surfaces like stucco require more paint than smooth surfaces. Adjust your calculations accordingly.