Concrete Repair & Replacement in Chicago, IL

Not every cracked slab needs to come out. Some need lifting, some need a single section cut out and replaced, some need the surface addressed, and some are genuinely finished. The honest answer depends on why it failed, and that is what we work out before quoting.

We handle concrete repair and replacement on driveways, walks, patios, steps and garage slabs across Chicago and the suburbs.

Settled slabs: lift or replace

Where a slab has dropped but the concrete itself is sound, mudjacking or polyurethane lifting raises it back to grade for a fraction of replacement cost. It works best on a slab that settled as a unit rather than one that has broken into pieces.

Where the slab has cracked into multiple sections and rocks underfoot, lifting only buys a season. At that point the base has failed and the honest recommendation is replacement.

Section replacement

On a long driveway or walk, a single failed panel can be saw cut out at the joints and replaced without touching the rest. The new panel will be a different shade for a year or two and then largely blends.

This is the most cost-effective repair available and the one most contractors will not offer, because a full tear-out is a bigger invoice.

Surface problems: scaling, spalling and popouts

Scaling is the top layer flaking off, usually from salt, a mix without proper air entrainment, or finishing while bleed water was still on the slab. Light scaling can be resurfaced with an overlay. Deep scaling means the surface is compromised through and replacement is the durable answer.

Spalling around joints and edges is often a jointing or edge-detail problem. Popouts, the small conical craters, come from reactive aggregate and are cosmetic more than structural.

Cracks: which ones matter

Hairline shrinkage cracks in a slab are normal and not a structural concern. Cracks that are wide enough to catch a fingernail, that have vertical displacement between the two sides, or that keep growing are telling you the base moved.

We fill and seal what should be filled, and we tell you plainly when a crack is a symptom of something that filling will not fix.

How we run a concrete repair job

1. Diagnose the causeSettlement, base failure, drainage, salt or finishing. The cause determines the repair.
2. Present the optionsLift, section replace, resurface or full replacement, with the trade-offs on each.
3. Address drainage firstIf water is the cause, fixing the slab without fixing the water just resets the clock.
4. Execute the repairSaw cut clean, lift, or tear out and rebuild base as the case requires.
5. Match and finishNew work is finished to match the existing texture as closely as concrete allows.
6. Seal where it helpsSealing extends life on repaired surfaces exposed to salt.

What affects the price

• Whether the slab can be lifted or has to be replaced
• Number of panels or square footage involved
• Access for equipment on a city lot
• Whether drainage work is needed to stop it recurring
• Matching an existing finish
• Saw cutting and disposal

What we check before quoting

An estimate that arrives without anyone looking at the site is a guess. These are the things that move the number, and the reason we come out.

• Access. Whether a truck can back up to the work or everything moves by buggy, pump and wheelbarrow. On a Chicago city lot this can double the labor on its own.
• What is underneath. If the existing base was never compacted, it has to come out. Pouring over failed base buys a couple of seasons at most.
• Drainage. Where water goes now and where it needs to go. Downspouts, grade and yard drainage all feed into this.
• Public way. Aprons and sidewalk sections sit on city property, need a permit, and have to meet municipal specification.
• Load. What the finished work actually carries, which sets thickness and reinforcement.
• Disposal. Concrete is priced out by weight. An honest quote includes the haul and the tipping fees instead of adding them later.

Caring for new concrete

The first year decides the next twenty. Keep vehicles off new slabs for about a week and foot traffic off until the following day. Do not use de-icing salt on new concrete through its first winter, and seal it before the second. Keep downspouts discharging onto grass or a splash block rather than onto the slab, and put something underneath anything heavy that sits in one spot so it does not trap moisture there. Hairline shrinkage cracks are normal and not a defect; cracks with vertical displacement between the two sides are telling you something moved underneath, and those are worth a call.

Why concrete fails in Chicago

Chicago is one of the hardest climates in the country on concrete. The freeze-thaw cycle runs from November into March, de-icing salt goes down on every driveway and public walk, and the clay soil underneath holds water instead of draining it. Concrete that survives here is air-entrained, poured on a compacted stone base, pitched so water leaves, jointed on a proper grid, and kept away from salt through its first winter.

• Freeze-thaw scaling. Water gets into the surface, freezes, and lifts the top layer off in flakes. It comes from too much water in the mix, finishing while bleed water is still on the slab, or skipping the air entrainment Illinois exterior concrete needs.
• Road salt damage. De-icing salt accelerates surface scaling badly. New concrete should not see salt through its first winter and should be sealed before the second.
• Slabs poured on bad base. Most cracked driveways in the older neighborhoods were poured straight on disturbed clay with no compacted stone under them.
• Control joints cut late or shallow. Concrete is going to crack. Joints decide where. Cut at the wrong depth or a day late and the slab picks its own line across the middle.

Concrete repair across Chicagoland

We handle concrete repair throughout the city and the suburbs. A lot of this work happens in Naperville, Avondale and Oak Park, and we cover Chicago and Evanston regularly too. Every area we serve has its own page with the local detail.

Related work: Concrete driveways, Concrete patios and Concrete foundations. See all services or the full service area.

Concrete repair FAQ