First the floor is a mess. Is a closed in back porch that had glued down linoleum on it. Is un even. Most of linoleum was scraped up and then a garage floor paint was applied on top of that. Now the paint is peeling and chipping in spots because of moisture coming up from concrete that was never sealed because it was a back porch originally. Can I use a self leveling concrete over this mess and start fresh or do I have to have all of this grinded out?