Home Depot recommends that In case your MDF cabinet door includes a slight peeling of your laminate or Thermofoil, like the image over, you are able to glue it down with Call cement or other applicable adhesive. Use clear varnish before you paint, then the grain won't show as much. http://landenfdawt.howeweb.com/1690098/5-tips-about-cabinet-paint-home-depot-you-can-use-today