Cracked concrete can sometimes be resurfaced if the cracks are stable and limited and the slab is otherwise sound, but cracks that are still moving or come from settlement or base problems are likely to show back through a new surface. The condition of the slab under the cracks decides whether resurfacing makes sense.
Resurfacing renews the top of the concrete. It does not hold a slab together or stop movement, which is why cracks need a closer look first.
Why Cracks Matter for Resurfacing
A resurfacing layer bonds to the concrete below it. If that concrete moves along a crack, the new layer can crack in the same place. This is often called reflective cracking.
Some cracks are mainly cosmetic, while others point to settling, heaving or water problems underneath. A crack’s appearance alone does not tell you which kind it is.
Watching how a crack behaves through a season can also help. Cracks that stay the same are a different situation than cracks that keep growing.
When Resurfacing May Still Work
Resurfacing may fit concrete with a limited number of stable cracks, where the slab is level and the surface is the main concern. Cracks are usually repaired as part of surface preparation before the new layer is applied.
Joints that are part of the slab design are typically kept in the new surface so the concrete can still move where it was planned to.
Some products are better suited to concrete with minor cracking than others, which is part of choosing the right approach.
When Another Option May Be Better
Widespread cracking, broken sections, height differences across cracks or areas that keep moving usually need more than a new surface. Concrete repair may address damaged areas, while badly cracked slabs may need replacement.
If sections have sunk, leveling may be considered first, depending on the condition of the concrete. Drainage problems that keep soil wet under the slab should also be addressed.
Choosing the right fix first can save money, since a new surface placed over moving concrete may need to be redone.
Michigan Conditions
In Michigan, water that enters cracks can freeze and widen them during winter. That is one reason crack condition is checked carefully before resurfacing outdoor concrete around Kalamazoo.
Even after a successful resurfacing, new hairline cracks can appear over time, since the slab below still responds to temperature and moisture.
Asking how cracks will be handled and what to expect afterward can help you compare options fairly.
If your concrete has cracks and you are wondering whether a new surface makes sense, an evaluation can help sort out the options. Learn more about our concrete resurfacing services in Kalamazoo, or call (269) 404-2457.
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