Almost every concrete slab cracks at some point. The question is whether it is a harmless line or a sign of a bigger problem. Quick concrete crack repair keeps water out, keeps weeds out and keeps small cracks from turning into big, costly ones.
Concrete Kings does concrete crack repair for driveways, patios, walks and garage floors around Fayetteville. We are locally owned with 5 years of experience, and we give free estimates after we take a close look at what the crack is doing.
Understanding why your concrete is cracking
Not all cracks are the same. Hairline cracks are thin lines that appear in the first months as concrete dries and shrinks. They are common and usually harmless. Wider cracks, stair step cracks and cracks where one side sits higher than the other often point to movement in the soil.
Around Fayetteville, sandy soil can wash out under a slab during heavy rain, leaving a hollow spot. Tree roots lift edges. Heavy trucks crush thin slabs. Knowing the cause helps us pick the right concrete crack repair, so the crack does not come back.
- Shrinkage cracks, thin and usually harmless
- Settlement cracks, where one side drops
- Heave cracks from roots or soil movement
- Stress cracks near corners, doors and heavy loads
Our concrete crack repair methods
For narrow, stable cracks, we clean out dust and loose bits, then fill the crack with a flexible sealant or a polymer filler that moves a little with the slab. For wider cracks, we may cut a clean groove first so the filler has depth to hold on to.
If a crack shows movement, we look at the cause. Low spots can sometimes be lifted or supported before we fill. In some cases, steel stitches across the crack hold the two sides together. And when the damage is too big, we tell you that a patch is not enough and talk about replacing that section.
- Clean, route and fill with flexible sealant
- Epoxy or polymer filler for structural cracks
- Patch mortar for chipped edges and corners
- Section replacement when repair will not last
Keeping Fayetteville cracks from coming back
The best crack repair starts with water. If rain runs under your slab, the soil moves, and the crack returns. We check gutters, downspouts and the slope of the ground. Sometimes a small drainage fix saves you from a repeat repair.
We also suggest sealing the surface after the repair. A sealer keeps water out and helps the patch blend in. Filling cracks early is far cheaper than waiting until a slab breaks.
Concrete crack repair cost and next steps
Price depends on how many cracks you have, how wide they are and how hard they are to reach. Many small repairs can be done in a few hours. We give a free estimate and tell you honestly if a repair makes sense or if it is time for resurfacing or a new pour.
If a whole driveway is breaking up, see our page on driveway replacement. To book a visit, use the contact page or call us.
Concrete Crack Repair questions answered
Can all concrete cracks be repaired?
Most can be repaired or sealed, but a repair does not always fix the reason the crack formed. Thin shrinkage cracks are easy. We clean them out and fill them with a flexible sealer, and they stay tight for years. Wider cracks can be filled too, but if the slab is still moving, the crack may open again.
When the cause is soil washing out or a tree root pushing up, we talk about fixing that first, or about replacing the damaged section. We never want to take your money for a patch that will fail in a few months. That is why we look at the whole slab, measure how wide and deep the crack is, and tell you if it is a good candidate for concrete crack repair. If it is not, we explain the better option. If you are not sure how serious a crack is, take a photo with a coin or tape measure next to it and send it over. That helps us judge the crack before we visit.
How wide can a concrete crack be before it is a problem?
A crack under about one sixteenth of an inch wide is usually cosmetic. Cracks wider than a quarter inch deserve attention, because water, ants and weeds can get in. The bigger concern is height difference. If one side of a crack sits higher than the other, that is a sign of settlement or heave, and it can become a trip hazard.
Also look at the pattern. A single straight crack is less worrying than a web of cracks or several cracks in the same area. A crack that keeps getting longer or wider over a few months is telling you something. We can measure it, mark it and check it again over time. A quick visit costs nothing, and it can tell you if you need a simple fill or a bigger fix. Take a look at your downspouts and grading too. Fixing how water moves around your slab is often the cheapest and most effective part of any crack repair.
Is it better to seal or fill a concrete crack?
It depends on the crack. Sealing means putting a flexible material over or into the crack to keep water out. Filling means packing a material into the crack to make it level and sometimes to add strength. For thin cracks that do not move, a sealer is often enough. For wider cracks, we route a groove, clean it, and fill it with a flexible filler or a rigid epoxy.
Movement is the key. A crack that moves with temperature needs a flexible product that stretches. A crack that is stable and structural can take a rigid epoxy that bonds the two sides. Using the wrong product is the most common reason repairs fail. We choose based on what the crack is doing, not just how it looks. Whatever you decide, check the crack every few months. Catching a change early keeps a small fix from becoming a big one and saves you real money.
Will the repaired crack still be visible?
Usually yes, a little. A repair will show as a line or a patch, because the filler is not the same as the surrounding concrete. We can make it much less noticeable. We choose a filler color close to your slab, we smooth the surface level, and we can brush or texture it to match. On exposed or colored concrete, we try to match as best we can.
If looks matter a lot, concrete resurfacing is a better answer, because the overlay hides all repairs under one new surface. For driveways and garage floors, most people care more about stopping the damage than hiding it, and a neat, flush repair is enough. We tell you what to expect before we start, so you are not surprised. Matching the color is easier when the slab is clean. A good wash before the repair helps the filler blend in and look neat when the job is done.
How long does a concrete crack repair last?
A good repair on a stable slab can last for many years, often 5 to 10 or longer. A flexible sealant may need a refresh after several years as the sun and weather wear on it. An epoxy repair on a structural crack can last the life of the slab if the ground stays steady.
The repair life depends on three things, the cause of the crack, the product used and how well the crack was prepped. Clean, dry and dust free cracks bond the best. In Fayetteville summers, we like to repair on a dry day, because moisture can ruin the bond. Sealing the slab afterward adds more life. If a repair fails early, it usually means the slab is still moving, and we will tell you that up front. Choose a repair day with dry weather, because moisture in the crack is the biggest enemy of a long lasting bond.
Can I fix concrete cracks myself?
Small, thin cracks can be a fine do it yourself job. A caulk style concrete crack sealer from the hardware store works for narrow, stable cracks, as long as you clean out the crack and let it dry first. Take your time and follow the label.
Wider cracks, cracks in a slab that is sinking, and cracks near a house, garage or pool deserve a pro. The wrong filler can fail in a season, and a crack that moves can come back even bigger. We offer a free estimate, so you can see what it would cost to do it right. Many people find that having us fix everything in one visit, including sealing, is worth it, and you get the benefit of our five years of experience. If you still have questions, call us for a quick chat. We are happy to explain the steps so you feel comfortable no matter which route you pick.
Ready for a free estimate? Call (910) 356-9849 or use the estimate form. Concrete Kings of Fayetteville is locally owned and has 5 years of experience.