To accurately estimate the cost of materials and manpower for exterior painting, square footage calculations are crucial. You must measure every outside surface that can be painted, leaving off portions such as big windows, doors, and metal sections that don't need paint. Here is how do you calculate square footage for exterior painting:
Find out the perimeter of your house exterior.
Measure the length (in feet) of each external wall as you go around the home using a tape measure. To find the overall perimeter, add those measurements.
Now, measure the height of the exterior walls.
Take a measurement from the roofline to the ground. Take an average height for roofs that slope.
Find out the total square footage.
Multiply the perimeter and height to get this value. The formula is: Exterior Wall Area = Perimeter × Height.
Subtract non-paintable areas now.
You must now measure doors, windows, or any other non-paintable area. Calculate their area in square feet and finally, subtract the result from the total.
Do consider extra surface (if any)
Take independent measurements of any grills, balconies, railings, or textured surfaces in your house and add them to the total.
Account for two coats of painting
Two coats of paint are often needed for house exterior painting projects. Therefore, the effective square footage for paint usage is equal to the entire paintable area x 2.
You must also consider 5% to 10% extras for paint spillage or colour variations, or for final touch-up. Add it to the result that came after calculating the effective paint square footage.
This method of determining square footage gives you a solid idea of how much paint and labour you will need, which helps you budget more precisely for your exterior painting project. Hope this helps you.
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How do You Calculate Square Footage for Exterior Painting?
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2025-12-19T09:09:16+00:00 2025-12-19T09:09:44+00:00Comment
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