While polished concrete is extremely hard and durable, it isn’t immune to problems. As with all types of concrete, your polished concrete will crack eventually. Concrete cracks initially after installation and over time as it expands and contracts. The good news is careful preparation and installation can minimize cracking and control where it occurs. The truth is many homeowners like the appearance of fine cracks that appear over time in their polished concrete floors. If you are ever bothered by the appearance of cracks, they can be repaired down the road.