The best method for repairing concrete cracks depends on several factors including environment, weather, location, and the nature of the concrete crack. Although the basic strategy of sealing the cracks to keep out moisture remains the same, the best repair product for the job depends on the nature of the crack, the severity of the damage, as well as the age and condition of the concrete surface. After assessing the concrete, the best solution may be a filler, sealer, or coating.