See our Crack Repair service Kits Listed here See this image of an average floor crack that was repaired Using the Crack & Joint Compound and afterwards floor smooth by using a grinder. Also see the difference between the clean up concrete and dirty concrete. This is yet another example http://epoxycoatingsforconcretef82692.mybloglicious.com/11958244/ecs-epoxy-floor-coating-for-dummies