Will Polyaspartic (Epoxy) coating crack if the concrete cracks?
When your concrete cracks from shifting over time, usually the expansion joints will catch a majority of the cracks. We recommend coating in and out of the expansion joints instead of filling them in because this is where the majority of cracks form. If the joints are filled in the concrete cracks outside the expansion joints, you could see them manifest in the Polyaspartic coating. Hairline cracks are unlikely to come through the coating but if the cracks are larger than that, you will see a crack in the Polyaspartic coating.