How to Paint Paneled Doors in Your Home
Paint the flat surface of the raised or recessed panels, using a foam hot-dog-shaped roller or a 2-1/2- or 3-inch brush.
Don’t overload the brush or roller. Tap the brush on the sides of the paint can or roll the foam roller over the ridges in the paint tray to spread paint uniformly. Start painting in the center and work your way to the flat outer edges.