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Sherwin Williams Paint Formula:
The Sherwin Williams Paint Calculator estimates the amount of paint needed for a painting project based on the area to be painted, paint coverage per gallon, and number of coats required. It helps prevent overbuying or underbuying paint.
The calculator uses the Sherwin Williams paint formula:
Where:
Explanation: The formula calculates the base amount needed for one coat (area ÷ coverage) and multiplies by the number of coats to get the total paint requirement.
Details: Accurate paint calculation ensures you purchase the right amount of paint, saving money and reducing waste. It also helps ensure consistent color matching across all coats.
Tips: Measure the total paintable area accurately, check the paint can for coverage specifications, and consider the surface type and color changes when determining number of coats.
Q1: What is typical paint coverage per gallon?
A: Most quality paints cover 350-400 square feet per gallon, but this varies by paint type, surface texture, and application method.
Q2: How do I calculate wall area?
A: Measure length and height of each wall, multiply to get area, then subtract windows and doors (typically 20 square feet each).
Q3: Should I buy extra paint for touch-ups?
A: Yes, it's recommended to buy 10-15% extra paint for touch-ups and future repairs.
Q4: How many coats are typically needed?
A: Most projects require 2 coats for good coverage. Dark colors over light may need 3+ coats.
Q5: Does surface texture affect coverage?
A: Yes, rough or textured surfaces require more paint than smooth surfaces.