True concrete crack repair for moving cracks often requires the use of epoxy and steel clamps that straddle the crack and are inserted into slots cut into the concrete. (To date, we’ve never encountered a floor that required this; it’s a very unusual situation.) Once the cracks are filled we apply the microfinish concrete overlay.
This home required three coats because it had a lot of cracks and we wanted to minimize the possibility of a silhouette being visible. We wrapped it up with a stain, score, and concrete sealer. Our homeowners were very happy with the results.