I used the Epoxy kit to cover my garage floor in this past spring. My understanding is that if your original floor is too smooth, you will have to make it rough. Otherwise, the epoxy may peel off and the floor will be very slippery. I just used the chemical came with the kit to wash my floor and then apply the coating. I did not do anything to the part A of my garage. So far so good. But will wait until next year to see if it can survive the Canadian salty winter .