One of the most searched questions about microcement is also the most misunderstood: Does microcement crack? The concern is valid. Microcement is a thin, seamless finish applied over existing surfaces, which makes people assume it behaves like paint or plaster. In reality, microcement is a high-performance architectural coating  that behaves very differently—when installed correctly. The short, honest answer is this: Microcement can crack only when the system is poorly design