I put this stuff on 2 years ago on NEW concrete. The only place I've
had trouble is where the front wheels "skid," and it seems to have
come off in a couple of small places. The "sprinkles" cover a
multitude of sins. DO prep well, and DON'T put on in cold weather.
Nice warm day works great. I have a double garage, so needed two kits.
Also had to move stuff from one side of the garage to the other, so
total time was around a week, including prep and cure time. It sure is
easy to keep clean. I can simply hose it down, or use a push broom.
Grease dropping from my Jeep (it seems to be marking its territory)
come up easily. Can't beat it! NO idea what would happen if you were
putting it on over old/dirty concrete -- if you could get it clean
enough for good bonding. I also had about 1 pint left, so used that to
paint a small wood/chipboard bench top. Good for that as well.