Concrete Crack Repair in Louisville, KY
Diamond ground V cuts filled with polyurea so old concrete cracks stay buried under your new floor. For homes and facilities across Louisville and Southern Indiana, it is the right way to handle existing damage before any flake, grind and clear, or polished concrete coating goes down.
Every Floor. Every Customer. Every Time.
You get these on every install, no exceptions. Sullivan’s brings the same standards to every slab we repair and coat, from Louisville, KY to Salem, IN.
Lifetime Residential Warranty
5-Year Commercial Warranty
Family Owned & Operated
One Day Installation
Same-Day On-Site Estimates
Certified in-house crews
Proven Results, Built on Experience
Three decades of grinding, repairing, and coating concrete across Kentucky and Southern Indiana means our crew has fixed every kind of crack a slab can develop, from hairline surface lines to structural breaks that run the full length of a garage.
BRANDS WE'VE COATED
Years of Industry Experience
Floors Completed
Million Square Feet Coated
Why Crack Repair Belongs in Prep, Not After
Almost every concrete slab has at least one crack. Slabs settle, expand, contract, and react to the freeze and thaw cycles Kentucky and Indiana winters deliver. The cracks themselves are not the problem. The problem is what happens when a coating is installed over an unrepaired crack.
A flake, grind and clear, or polished concrete floor amplifies whatever is happening in the slab beneath it. An unrepaired crack will read through the finished floor as a visible line, and within a year or two it will start to telegraph as the slab continues to move. The coating is not failing. The slab is.
Crack repair handles the slab side of the equation before any coating goes down. Diamond ground V cuts opened up along the existing cracks, filled with polyurea, and finished flush with the slab surface. The repair locks the crack in place and gives the new coating a stable, continuous surface to bond to.
The V Cut Polyurea Method
A surface level crack filler is a temporary patch. It seals the top of the crack but leaves the body of the crack untouched, and within a season the slab reopens it from below.
Sullivan’s uses a V cut method instead. We diamond grind a V shaped channel along the full length of each crack, opening the slab to a depth that gives the repair real bite. Then we mix a two part polyurea with silica sand to an applesauce like consistency and putty it into the V channel. Once the fill cures harder than the concrete around it, we run one final grind across the repair so the surface is perfectly flush with the surrounding slab.
The result is a repair that is structurally sound, invisible under the finished coating, and engineered to outlast the floor on top of it.
Find Your System
Crack Repair Pairs with Every Sullivan’s System
Crack repair is the most universal upgrade we install. Whether you are putting in a decorative flake floor, an industrial grind and clear, or an architectural polished concrete finish, crack repair belongs in the prep stage on any slab with visible damage.
With Flake Floors
The flake itself hides minor surface variation, but a real crack still reads through the finished floor over time. Crack repair before flake means the floor stays smooth for life.
With Grind and Clear
A grind and clear floor shows everything in the slab. Unrepaired cracks read straight through the polyaspartic clear coat. Crack repair before grind and clear is almost always the right call.
With Polishing
Polished concrete is the most demanding finish for crack repair. The diamond grind amplifies whatever is in the slab. Crack repair before polishing keeps the finished floor architectural, not damaged.
What a Sullivan’s Crack Repair Looks Like
Crack repair is performed on the same install day as your flake, grind and clear, or polishing system. It happens after the initial diamond grinding of the slab and before any coating goes down.
Identify Every Crack
After the slab is ground clean, we walk the floor and mark every visible crack. Hairline cracks, surface cracks, and structural cracks all get flagged.
Diamond Grind the V Cut
We open each crack with a diamond V cut along its full length, giving the polyurea fill real depth and bite into the slab.
Mix and Fill with Polyurea
A two part polyurea is mixed on site with silica sand to an applesauce like consistency, then puttied into the V channel along the full length of the crack. Once cured, the fill is harder than the surrounding concrete and bonds the crack together as a single structural piece.
Final Grind for a Flush Finish
Once the polyurea sets up, we run one final grind across the repair so the cured fill is perfectly flush with the surrounding slab. There is no ridge, no dip, no tactile difference between the repair and the concrete around it. The slab is now ready for your coating.
What If My Concrete Cracks Again Later?
An honest answer: a properly repaired crack is structurally locked in place by the polyurea fill and is engineered to stay buried for the life of the floor. New cracks from major slab movement are rare on a properly maintained slab, but they are not impossible. Foundation settling, severe freeze and thaw events, or impact damage can produce new cracks years after the install.
If a new crack does appear, it is the slab moving, not the coating failing. We are upfront about this during the on site consultation, and we will identify any signs of active slab movement before we quote your repair. If the slab itself needs more attention than crack repair can provide, we will tell you that directly instead of selling you a coating that is going to telegraph the problem six months later.
0% Financing Available for Qualified Buyers
Crack repair is almost always bundled into a flake, grind and clear, or polishing install rather than billed as a standalone service. Qualified buyers can finance the full project with affordable monthly payments and no interest.
Real People. Real Results.
Hear From Customers Who Stopped Cracks From Coming Back
Where We Work
Crack Repair Across Kentucky and Indiana
From hairline cracks in a Louisville garage to structural breaks in a Columbus warehouse floor, our crew handles crack repair the same way with the same standard of finish.
FAQs
Crack Repair Questions, Answered
Do I really need crack repair before my floor is coated?
If your slab has visible cracks, yes. An unrepaired crack will read through any flake, grind and clear, or polished concrete finish over time. Crack repair before the coating means the finished floor stays smooth for life.
What is the V-cut polyurea method?
We diamond grind a V shaped channel along the full length of each crack, fill the channel with a two part polyurea mixed with silica sand to an applesauce consistency, and run one final grind so the cured fill is flush with the surrounding slab.
Why polyurea instead of caulk or epoxy crack filler?
Caulk is a surface level fix that fails within a season. Epoxy crack filler bonds to the slab but is brittle and can crack again along the same line under slab movement. The two part polyurea we use, mixed with silica sand and puttied into the V cut, cures harder than the concrete around it and locks the two sides of the crack together as a single structural piece.
Will the repair be visible under my finished floor?
No. Once the final grind is complete, the repair sits flush with the slab and disappears under the floor coating. On a flake floor it is hidden under the chip blend. On grind and clear or polished concrete the repair blends with the surrounding concrete tone.
Is crack repair a standalone service, or only an add-on?
Almost every Sullivan’s crack repair is bundled into a flake, grind and clear, or polishing install on the same day. We do offer crack repair as a standalone service in specific cases.
What if my slab has dozens of cracks?
A heavily cracked slab usually still works fine for a flake floor with crack repair, because the flake hides minor surface variation. For grind and clear and polishing, a heavily cracked slab is a more nuanced conversation, and we will be honest with you during the on site consultation about whether the finish you want is the right call.
Can I add crack repair after the floor is already installed?
No. Crack repair is a prep stage that has to happen before the coating goes down.
What is the warranty on crack repair?
When crack repair is installed as part of a Sullivan’s floor system, it is covered under the same warranty as the floor itself. That means a lifetime warranty on residential installs and a 5 year warranty on commercial installs.
Where does Sullivan's offer concrete crack repair?
Sullivan’s repairs concrete cracks throughout Kentucky and Southern Indiana. That includes Louisville, Elizabethtown, and Bardstown in Kentucky plus New Albany, Columbus, Bloomington, Madison, Salem, and Jasper in Indiana.
Ready to Repair the Cracks Before You Coat the Floor?
Book your free on site estimate and we will walk the slab with you, identify every visible crack, and give you the complete cost of your flake, grind and clear, or polishing install with crack repair bundled in.