Spalling concrete is concrete which breaks up, flakes, or becomes pitted. This is usually the result of a combination of poor installation and environmental factors which stress the concrete, causing it to become damaged. On a low level, concrete spalling can be purely cosmetic in nature. However, it can also result in structural damage such as damage to reinforcing bars positioned inside the concrete. For this reason, it is important to address spalling concrete when it first starts to appear.

The signs of spalling are easy to spot. The surface will become rough and flaky, and may pit. In some cases, chunks of concrete break loose from the installation. The concrete can also start to crack, especially if large chunks break off. Spalling concrete can be repaired by totally removing the damaged section of concrete and filling it in with cement.