There are two guarantees you will get with concrete in Colorado. It will get hard, and it will crack. Colorado’s expansive clay soils make it virtually impossible to keep concrete from shifting. It may take weeks, months, or years, but at some point, your concrete will move. Since concrete is not flexible, movement in the underlying soils will cause your concrete shift and in turn, crack. The cracks can cause your concrete to become visually unappealing. It will also allow water to penetrate to the underside of the slab getting to the soils, which speeds up the movement. It is first important to identify the cause of the movement and remediate the problem as best possible. Once these issues are addressed, the cracks can be repaired.