The foundation of your estimate is the total paintable surface area. To find this:
Here is the professional approach to calculating exactly how much paint you need for your exterior project. 1. The Core Calculation: Square Footage how much paint to buy for exterior of house
Measure from the foundation to the roofline (excluding gables). Multiply: Perimeter × Height = Total Square Footage. The foundation of your estimate is the total
Your house’s specific characteristics can drastically change how much paint you actually use: How Much Paint Do I Need? - Behr The Core Calculation: Square Footage Measure from the
Measure the distance around the entire base of your house.
For triangular gables, multiply the width by the height and divide by two. Add this to your total.
To be more precise, subtract standard sizes for doors (approx. 20 sq. ft.) and windows (approx. 15 sq. ft.). 2. Standard Coverage Rates
