When it comes to painting paneling, it’s all about the prep work. Before you apply wall paint, it’s important to clean the paneling and then apply Zinsser Bulls Eye 1-2-3 Primer to seal in stains and prevent the color of the wood from showing through the paint. Once your paneling is primed, you’re ready to use wall paint. Check out these before-and-after photos to see how SoPo Cottage gave paneled walls a more modern look with the help of primer and paint.