How can I prevent concrete spalling?

It is important to understand how to prevent concrete spalling, as fixing a concrete surface that is affected by spalling can be a very expensive process. Spalling is caused by the constant expansion and contraction of the concrete, due to the weather loosening the top surface of the concrete. The best way to prevent spalling, is to make sure that a concrete protectant is applied to the surface within 30 days of the concrete curing after installation. Reapplying a protective coat at least once every 2 years can help to reduce the effects of the change in the weather, and keep out the moisture that can make the concrete expand and contract.