Concrete patio slab with a control joint beside a landscaped backyard

Concrete Repair Service

Concrete Crack Repair
in Lee's Summit, MO

A crack is a symptom, not a complete diagnosis. Some cracks develop as concrete shrinks and cures. Others form because the slab has lost support, absorbed moisture, carried repeated loads, or moved with the surrounding soil.

We inspect whether the crack is stable, whether both sides stay level, and whether the slab around it is still solid. We clean and seal narrow, stable cracks. Wide, offset, recurring, or branching cracks can point to slab movement and may need a stronger repair or replacement of the affected section.

Send photos and project details through the form so we can see the crack pattern, nearby joints, vertical movement, drainage, and any previous patches.

Local ServiceServing Lee's Summit

Concrete ServicesResidential & commercial projects

Concrete Crack RepairPractical repair options

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Intersecting cracks across a concrete slab

Common Problems

We inspect a crack's pattern, width, depth, and movement. Hairline and shrinkage cracks can stay stable, while recurring, branching, or vertically offset cracks often point to movement, drainage trouble, or lost support below the slab.

Hairline Cracks

Very narrow cracks are common in exterior concrete. Some are mainly cosmetic, while others allow moisture to enter. Their location, pattern, and change over time are often more important than width alone.

Shrinkage Cracks

Concrete changes volume as it cures, which can create early shrinkage cracks. When these cracks remain stable and the surrounding slab is sound, cleaning and sealing may be appropriate.

Cracks Along Joints

Control joints are designed to manage where cracking occurs. Cracks or gaps at these locations may require cleaning and suitable joint material rather than a rigid surface patch.

Widening or Recurring Cracks

Cracks that reopen or continue widening after previous repairs may indicate ongoing movement. Reapplying the same material without addressing the cause can lead to repeated failure.

Offset Cracks

When one side of a crack sits higher than the other, vertical slab movement has occurred. Surface filler cannot correct the height difference, and significant displacement may require replacement of the affected section.

Branching or Map Cracks

Multiple interconnected cracks can indicate surface deterioration or broader slab damage. The appropriate response depends on crack depth, movement, and how much of the slab is affected.

Causes and Conditions

We check curing history, moisture, base support, traffic loads, soil movement, joints, and the nearby slab before choosing a crack repair method.

Crack beside a concrete control joint near a garage

Curing and shrinkage

Concrete loses moisture and changes volume as it cures, which can create shrinkage cracks. Some remain narrow and stable, while others may widen if additional movement develops.

Moisture

Water entering cracks, porous surfaces, or deteriorated joints can contribute to freeze-thaw damage, erosion, and continued deterioration. Reducing recurring water entry can help limit future damage.

Loss of support

Erosion, settlement, voids, or poor compaction can reduce support beneath a slab. Unsupported areas may settle, flex, or crack, especially when vertical displacement is already present.

Repeated loads

Vehicle traffic, equipment, and foot traffic place repeated stress on concrete. Existing cracks, weak areas, or poor support can allow damage to widen or spread under continued loading.

Soil movement

Settlement, erosion, changing moisture levels, and seasonal ground movement can shift the material supporting the slab. If movement continues, repaired cracks may reopen or new cracks may develop nearby.

Joint movement

Control and expansion joints help manage normal concrete movement. Deteriorated joint material or open gaps can admit water and debris and place additional stress on nearby concrete, so joint condition should be included in the repair evaluation.

TYPICAL REPAIR SCENARIO

Before & After

This example shows the kind of damage we address. Repair methods depend on the crack pattern, movement, support, and condition of the slab.

BEFORE

Visible cracks can allow moisture into the concrete and may widen or reopen when movement is still active.

AFTER

We can seal or rebuild a stable damaged area, although the repair line or color difference can remain visible.

Repair or Replacement?

Repair may make sense

We repair a crack when it is stable and the slab around it remains sound. We match the method to the crack location and expected movement.

The crack is narrow and stable.
There is little or no vertical displacement.
The surrounding concrete remains sound.
Damage is localized to a defined area.
Joint or edge damage can be isolated.
Previous movement has not caused the crack to reopen repeatedly.

Repair can reduce water and debris entry or rebuild localized missing material, but it may remain visible.

Replacement may be better

We recommend replacement when cracking reflects broader slab failure or active movement and another surface repair will not hold up.

The crack has major vertical offset.
The slab has broken into several moving pieces.
Cracks cover a large percentage of the surface.
Concrete around the crack is soft, scaling, or crumbling.
Water collects because the slab grade has changed.
Previous repairs repeatedly separate.

Worker measuring a crack in a concrete slab

What We Evaluate

Useful photos can make the initial review more accurate.

Include:

A wide photo showing where the crack is located on the slab.
A close-up showing the crack width and surrounding surface.
A side-angle photo if one side is higher than the other.

A ruler or common object can help show scale, but do not place anything in a location that creates a safety issue. Also note whether the crack has changed over time, holds water, or has been repaired before.

Crack width, depth, and pattern
Vertical offset or movement
Nearby joints and slab edges
Surface condition around the crack
Water and drainage clues
Previous repairs or recurring cracks

How the Request Moves Forward

1
Submit Crack Details
Share wide and close-up photos, the approximate crack length, and whether it has changed. Include a side view if one side may sit higher.
2
Condition Review
The review considers crack width and depth, vertical displacement, active movement, moisture, previous repairs, and the surrounding slab condition.
3
Repair Method Guidance
Sealing, routing and filling, localized repair, or replacement may be considered based on the crack pattern, movement, and adjoining concrete.
4
Scope & Next Steps
The next step identifies the affected area, likely repair limits, and conditions that may require a different scope after an in-person evaluation.

Frequently Asked Questions

Can every concrete crack be repaired?

Most cracks can be treated in some way, but not every crack should be filled. A crack caused by active movement or major displacement may require replacement of the affected section.

Will concrete crack repair stop water completely?

A properly prepared seal can reduce water entry, but exterior concrete remains exposed to weather and movement. No surface repair should be presented as a permanent waterproofing guarantee.

Why did my previous crack repair fail?

Common reasons include poor surface preparation, using a rigid material on a moving crack, moisture, continued slab movement, or deterioration of the surrounding concrete.

Can a repair make the crack invisible?

Usually not. Repair materials and new concrete differ from aged concrete in color and texture. The repaired area may become less noticeable, but an exact visual match is unlikely.

Is a wider crack always worse than a narrow crack?

Not necessarily. Width matters, but vertical displacement, movement, depth, pattern, and the condition of the surrounding slab are equally important.

Should I repair a crack before winter?

Reducing water entry before repeated freezing conditions may help limit further deterioration, but the timing and repair material must fit the project and weather. The crack should still be evaluated for active movement.

Plan Your Concrete Crack Repair Project

Use the form to identify the surface, approximate crack length, and whether the crack is changing. Attach up to three photos, including a side view when there is a height difference. We inspect the crack pattern, vertical movement, and slab condition before recommending sealing, localized repair, or section replacement. For broader movement, see driveway replacement, sidewalk replacement, and patio replacement. Learn when crack repair may address the visible damage and when broader movement may require another approach. Our concrete repair cost factors and estimate preparation guide can help you prepare the details.

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Concrete Crack Repair
in Lee's Summit, MO

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