Painting is one of the most essential steps to be done after the construction of any building/house. Painting is done to protect the surface of the walls as well as to increase the appearance.
In this article, I will discuss how to calculate the quantity of paint required in a building.
Before starting the calculation let me tell you one important thing the quantity of paint is calculated in gallons.
There are two types of gallons
US gallon and Uk gallon.
1 US gallon = 3.785 litres
1 Uk gallon = 4.546 litres
In this calculation, we will use US gallons.
Let the length of the wall = 15 feet
The height of the wall = 12 feet.
Area of the wall 15 x 12 = 180 sft.
Thumb Rule For Paint Calculation
- 1 gallon of paint can cover up to 350 Sft area of Wet-wall
- 1 gallon of paint can cover up to 200 Sft area of Dry-wall
Paint Quantity Of Wet wall
Area of wet wall =180 Sft
Paint covered area = 350 Sft
Quantity of paint = 180/350 = 0.514 gallon
Let the price of 1-gallon paint = 20$ (it is different from a country to another country (15-40))
Price of 0.514 gallon paint = 0.514 x 20 = 10.28$
Paint Quantity Of Dry Wall
Area of dry wall = 180 Sft.
Pain covered area = 200
Quantity of paint = 180/200 =0.9 gallon.
Price of 0.9 gallon paint = 0.9 x 20 = 18 $
1. If the wall has any openings, subtract the area of openings from the total area & then calculate paint quantity.