I have a door I want to paint that has been painted before.
The paint is in really good shape however there are chips that I will repair. This door is a practice part I'm going to use some left over product. I have no plans to prime the whole door only the areas I work on.
My question is I don't know what the original paint is. Can a person seal over the repair and also the rest of the door which is just sanded? Or do you have to prime the whole door. I'm a bit confused with the use of sealer.