Painting Cost Formula:
The House Painting Cost Calculator estimates the total expense for painting a house exterior by calculating both material costs (paint) and labor costs based on surface area, paint coverage, and pricing.
The calculator uses the painting cost formula:
Where:
Explanation: The formula calculates material cost by determining how many gallons are needed and multiplying by paint price, then adds labor cost based on surface area.
Details: Accurate cost estimation helps homeowners and contractors budget properly, compare quotes, and plan painting projects effectively while avoiding unexpected expenses.
Tips: Measure total surface area accurately, check paint can for coverage specifications, research current paint prices, and get multiple labor quotes for accurate estimation.
Q1: How do I calculate surface area for painting?
A: Measure length and height of each wall, calculate area (length × height), then subtract areas of windows and doors. Add all wall areas together.
Q2: What is typical paint coverage per gallon?
A: Most quality paints cover 250-400 square feet per gallon. Check the specific product label as coverage varies by paint type and surface texture.
Q3: What factors affect labor costs?
A: Surface condition, number of coats needed, height/accessibility, regional labor rates, and time of year can all impact labor pricing.
Q4: Should I include primer in the calculation?
A: Yes, if surface requires priming. Calculate primer separately using the same formula but with primer coverage and price.
Q5: How much extra paint should I buy for waste?
A: Add 10-15% extra to account for spillage, touch-ups, and uneven surfaces. Always round up to whole gallons when purchasing.