In general, 1lb of powder coating will cover around 80-100 square feet. However, this number can vary depending on a few factors such as the type of powder coating being used and the method of application. For example, if you are using a thicker powder coating, you may only be able to cover 60-70 square feet with 1lb. Additionally, if you are applying the powder coating with a spray gun, you will likely use more powder than if you are using an electrostatic process.