Not every damaged slab needs replacement, and not every slab is worth repairing. The honest answer depends on what failed and why. We repair cracks, spalled and scaled surfaces, broken edges and corners, and deteriorated joints, and we tell you plainly when repair money would be better spent on a repour.
Good repair work also addresses the cause. A crack from a one-time event gets a different fix than a crack from ongoing settlement, and sealing the symptom without the source just schedules the next repair.
What you get
The repairs we run every week in Douglas County
Kansas concrete fails in predictable ways: cracks from slab movement, surface scaling from salt and freeze-thaw, spalled edges at joints, settled sections that trip people, and joints whose sealant gave up a decade ago. We fix all of it, and most repair visits handle several of these in one mobilization.
Crack repair done right means routing the crack to give sealant a proper reservoir, cleaning it, and filling with a flexible polyurethane that moves with the slab. Smearing caulk on a dirty hairline crack is a one-winter fix, which is why we do not do it.
Scaled and spalled surfaces get repaired with polymer-modified toppings rated for exterior freeze-thaw service, feathered to match surrounding texture. Where damage runs deep or covers most of a slab, we will tell you straight that resurfacing or replacement beats patch-on-patch money.
Repair or replace: how we make the call with you
The honest math is simple. If repairs cost less than a third of replacement and the slab base is sound, repair. If the slab has settled badly, cracked into multiple drifting pieces, or the base underneath has washed out, repair money becomes rent, not a fix.
We give you that math in the estimate: here is the repair price, here is what replacement runs, and here is how long we believe each path lasts on your slab. Plenty of customers get five to ten more years out of a few hundred dollars of repair, and plenty of others save thousands by skipping straight to replacement instead of paying twice.
Small jobs are welcome. Single panel replacements, one set of steps, a tripping sidewalk joint. Small repairs done well are how we earn driveways and patios later, and our schedule always keeps room for them.
Why winter is the repair season nobody uses
Repair calendars in Kansas flip the usual logic. Crack sealing actually wants cooler weather, because cracks open widest in cold and sealant installed then stays compressed in summer instead of stretched in winter. Late fall and mild winter days are prime time for joint and crack work.
Booking repairs in the off season also gets you faster scheduling and our full attention between big pours. The spring rush hits every contractor in the county at once, and the trip hazard you ignored in November becomes a three-week wait in April.
Interior repair work, garage floors, basement cracks, and coating prep runs all winter regardless of what the thermometer does outside. If a slab problem is bugging you in January, call in January.
Garage floors, basement slabs, and interior cracks fill our winter calendar, and they deserve the same engineering attention as exterior work. Interior cracks telegraph through flooring people want to install on top, so we flatten, fill, and prep slabs for LVP, tile, and epoxy as their own service.
What breaks concrete in Lawrence
Most repair calls in Lawrence trace back to one process: water plus freeze-thaw. Meltwater soaks into the surface, freezes, expands about nine percent, and pops the top layer off. Deicing salt accelerates it by increasing how much water the surface absorbs and how many freeze cycles it sees. That is why so much local concrete shows surface scaling and spalling after hard winters, especially on driveways and steps that get salted.
The repair window matters. A surface that shows light scaling can be cleaned, repaired, and sealed for a few hundred dollars. The same surface left open through two or three more winters absorbs water into the slab body, and at that point repair turns into resurfacing or replacement. We tell every repair customer the same thing: the cheapest concrete repair in Kansas is the one you do the first year you notice the damage.
Settlement is the other local driver, courtesy of Douglas County clay. Slabs poured on poorly compacted fill, or next to foundations where backfill settled, drop and crack along the settled edge. Depending on the slab, the right fix is leveling, partial replacement of the settled section, or joint and crack sealing with monitoring. We diagnose which one you are looking at before quoting, because the fixes differ in price by an order of magnitude and you should only pay for the one your slab needs.
Where we do this work
We provide concrete repairs across Lawrence and Douglas County:
Concrete Repairs: common questions
Can cracked concrete actually be repaired?
Yes, when the slab is stable. Routed and sealed cracks stay sealed and stop water entry. If the crack is from active settlement, we address the movement first or the repair reopens.
What causes concrete to flake and chip on the surface?
Freeze-thaw damage, usually accelerated by deicing salt and missing sealer. We repair the surface and seal it so the cycle stops. Switching to sand or non-chloride deicer protects the repair.
Repair or replace: how do you decide?
Rule of thumb: if damage covers more than a third of the slab, or the slab has settled badly, replacement usually wins on cost per year of life. We give you both numbers and the reasoning.
How much do concrete repairs cost?
Crack sealing typically runs in the low hundreds. Surface repairs scale with area. Anything we quote comes from looking at the actual slab, and assessments are free.