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Paint Formula:
The House Paint Calculator estimates the amount of paint needed in litres based on the surface area to be painted, the paint's coverage rate, and the number of coats required. This helps in planning and budgeting for painting projects.
The calculator uses the paint calculation formula:
Where:
Explanation: The formula calculates the paint needed per coat by dividing area by coverage rate, then multiplies by the number of coats to get the total paint requirement.
Details: Accurate paint calculation prevents wastage, ensures you purchase the right amount of paint, helps with budget planning, and avoids interruptions during the painting project due to insufficient paint supply.
Tips: Measure the total surface area accurately in square metres. Check the paint can for the specific coverage rate (typically 10-15 m²/L). Consider the surface type and color when determining the number of coats needed.
Q1: How do I measure the surface area accurately?
A: Measure length and height of each wall, calculate area (length × height), and sum all areas. Subtract areas of windows and doors.
Q2: What is a typical paint coverage rate?
A: Most paints cover 10-15 m² per litre, but this varies by paint type, surface texture, and application method. Always check the manufacturer's specifications.
Q3: How many coats are usually needed?
A: Most projects require 2 coats for good coverage. Dark colors over light may need 3 coats, while light colors over light may need only 1 coat with primer.
Q4: 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.
Q5: Does surface texture affect paint coverage?
A: Yes, rough or porous surfaces require more paint than smooth surfaces. Textured walls may need 20-30% more paint than calculated.