Crack Treatment Concrete Crack Sealer & Treatments Cracks in concrete may be cause for concern depending on the type and location of the crack. If the cracks are in control joints or are surface cracks, simply filling the crack with an appropriate concrete crack sealer will likely prevent further damage. If the crack goes all the way through the slab (structural crack), there is not much that can be done to prevent the eventual decay of the affected areas. However, the damage can be mitigated by sealing the crack with a flexible filler to prevent moisture and debris from getting into the crack. There are a variety of ways to treat cracks depending on whether they are active or dormant. Please contact our decorative concrete contractor professionals to discuss and determine the options available to you.