What is the recommended method for preparing a surface for painting using a sander deglosser?

To prepare a surface for painting using a sander deglosser, first clean the surface to remove any dirt or debris. Then, apply the sander deglosser according to the manufacturer's instructions. This will help remove any gloss or sheen from the surface, allowing the paint to adhere better. Finally, sand the surface lightly to smooth out any rough areas before applying the paint.