I have 20 year old MDF kitchen cupboards that were professionally cellulose sprayed when made. The MDF has dented on the edges over the years, and they’re a bit shabby. What procedures do I need, to repaint by hand, in order to do a good job? I don’t wish to repaint the cupboard inner walls, though I’ll do the cpbd floors. I’ll remove doors, and also paint the exterior trims. Is there any particular brand of paint that anyone would recommend, having seen how it wears?