Concrete Crack Filling & Sealing
Repair the problem. Preserve the concrete when it makes sense.
Get a repair-first evaluation of the damage, the surrounding concrete, and the conditions that may be causing it.
REAL PROJECT PHOTO · 1600 × 1000Start With the Problem, Not the Product.
You don't need to know the repair method before you call. Show us what changed and we'll evaluate the condition.
Concrete cracks are common, but not every concrete crack means the same thing. A narrow crack in a relatively stable slab may be a surface or shrinkage issue. A crack that continues widening, changes elevation, or appears alongside settlement may point to movement beneath the concrete. Other cracks may develop because of: Weather exposure Freeze-thaw cycles Shrinkage Settlement Poor drainage Soil movement Overloading Previous repairs
Concrete deterioration
Concrete Repair Pros provides concrete crack repair in Cedar Rapids, Iowa City, and surrounding communities, helping property owners determine what caused the crack, whether the surrounding concrete remains sound, and what type of repair is appropriate. The goal is not simply to make a crack disappear. The goal is to understand the crack, address the condition when practical, and repair the concrete in a way that fits the slab and its surroundings.
What Is Concrete Crack Repair?
Concrete crack repair is the process of addressing cracks in existing concrete.
Depending on the crack and surrounding slab, repair may involve: Cleaning Preparing the crack Filling Sealing Patching Stabilizing surrounding concrete Correcting movement or settlement Replacing severely damaged concrete The appropriate method depends on the type of crack. A repair that works for a narrow stationary crack may not be appropriate for a crack caused by continuing movement.
Why Does Concrete Crack?
Concrete can crack for many different reasons.
Understanding the cause is important because filling the visible crack does not necessarily correct the condition that created it.
Concrete Shrinkage
Concrete changes as it cures.
Shrinkage can create relatively narrow cracks, particularly where: Joints are absent
Concrete geometry concentrates stress
Curing conditions vary Reinforcement or restraint affects movement Not every shrinkage crack indicates a major structural problem. Settlement If the soil beneath concrete moves or compresses, the slab can crack as it loses uniform support. Settlement-related cracking may occur with: Low spots Uneven slabs Tilted sections Gaps Drainage problems When cracking accompanies slab movement, crack filling alone may not address the underlying condition. Freeze-Thaw Movement Iowa's winter weather exposes exterior concrete to repeated freezing and thawing. Water entering cracks and joints can freeze and expand. Seasonal movement can contribute to: Crack widening Edge deterioration Surface damage Slab movement Poor Drainage Water around concrete can contribute to soil movement and deterioration. Potential sources include: Downspouts Roof runoff Poor grading Standing water Erosion Water entering joints Soil Movement Changes in soil moisture or supporting conditions can affect slabs. This may cause cracking even when the concrete originally appeared sound. Heavy Loads Concrete may crack when loads exceed what the slab and supporting base can reasonably handle. Examples may include: Heavy equipment Vehicle traffic Improperly supported loads Concentrated weight Existing Concrete Movement A crack may also result from an existing slab that is already moving. That is why crack location and surrounding elevation matter. Types of Concrete Cracks Hairline Concrete Cracks Hairline cracks are very narrow. They may be associated with: Shrinkage Surface movement Normal concrete aging Their significance depends on location, pattern, and whether the crack is changing. Narrow Surface Cracks These cracks may be visible without being deeply separated. They can sometimes be addressed with an appropriate filling or sealing method. Wider Concrete Cracks Wider cracks require closer evaluation. Questions include:
Is the crack moving?
Are the edges at different elevations?
Is water entering?
Is the surrounding concrete stable?
Is settlement present?
Cracks With Vertical Displacement If one side of a crack is higher than the other, the condition may involve slab movement. That is different from a simple surface crack. Leveling or lifting may need to be considered rather than treating only the crack. Cracks With Horizontal Separation A visible gap may indicate that the concrete sections have moved apart. The cause needs to be considered before selecting a repair. Corner Cracks Corners can crack because of: Settlement Impact Stress concentration Poor support Repeated loading Edge Cracks
Concrete edges are vulnerable to:
Impact Freeze-thaw exposure Erosion Unsupported edges Settlement
Does Every Concrete Crack Need Repair?
No. Some cracks may be minor and stable. Others may allow water intrusion or indicate a larger concrete problem. The decision should consider: Crack size Crack location Crack pattern Movement Slab condition Water exposure Underlying support Intended use The objective is to distinguish a crack that can be reasonably repaired from one that is evidence of a larger problem.
How Do You Know if a Concrete Crack Is Serious?
A crack deserves closer attention when it: Continues getting wider Has noticeable vertical displacement Reappears after repair Is accompanied by slab settlement Allows significant water entry Is associated with broken concrete Extends through multiple areas Appears alongside drainage or soil problems A crack by itself does not provide enough information to determine its cause. The surrounding concrete matters.
Can Concrete Cracks Be Repaired Without Replacing the Slab?
Sometimes. Localized cracking in otherwise usable concrete may be repairable.
Repair may be practical when:
The slab remains stable Cracks are manageable Surrounding concrete is sound Movement is limited The repair method matches the crack Replacement becomes more likely when the concrete is badly broken or the underlying movement cannot reasonably be corrected.
Concrete Crack Filling vs. Crack Repair
These terms are sometimes used interchangeably, but they are not necessarily the same. Crack filling focuses on putting material into the crack. Crack repair considers the crack, its surrounding concrete, and the reason it developed. A crack may be filled without solving: Settlement Drainage Soil movement Slab displacement That is why diagnosis comes before simply filling every visible line.
Concrete Crack Sealing
Sealing can help protect an appropriate crack from: Water Moisture Debris Continued surface exposure The correct sealant depends on: Crack characteristics
Concrete location
Movement Exposure
Repair objective
Not every crack should receive the same material.
Can You Fill a Moving Concrete Crack?
A moving crack may require a repair approach that accounts for continued movement. Simply filling a crack with a rigid material may not provide the desired result if the concrete continues moving. The crack and slab should be evaluated together.
Can Concrete Crack Repair Stop Future Cracking?
Not necessarily.
Repair addresses the existing condition.
Future cracking may occur if the cause remains active. Potential contributors include: Soil movement Settlement Water Freeze-thaw cycles Continued loading Structural movement Good crack repair begins by understanding what caused the crack.
Can Concrete Crack Repair Make the Crack Invisible?
Not always. Existing concrete has: Texture Aggregate Color variation Weathering Previous repairs A repaired crack may remain somewhat visible. The objective is a sound and appropriate repair—not a guarantee that the concrete will look factory-new.
Concrete Crack Repair and Water
Cracks can create pathways for water to reach areas that were previously protected. Water may contribute to: Soil erosion Freeze-thaw damage Moisture-related deterioration Additional cracking Loss of support Keeping water from entering an appropriate crack can therefore be an important part of maintenance.
Concrete Crack Repair and Freeze-Thaw Weather
Exterior concrete in Cedar Rapids and Iowa City experiences seasonal temperature changes. Water can enter cracks and freeze. Repeated cycles can contribute to additional deterioration. Repairing appropriate cracks before water and winter exposure become bigger issues can help protect the existing concrete.
Concrete Crack Repair Around Driveways
Driveways commonly develop cracks from:
Settlement Vehicle loads Freeze-thaw exposure Base movement Aging Drainage
Driveway-specific repair remains owned by our Driveway Repair page.
This page focuses on the concrete crack repair intent, regardless of the particular exterior flatwork application.
Concrete Crack Repair Around Sidewalks
Sidewalk cracks may result from:
Settlement Tree roots Freeze-thaw movement Impact Soil movement Crack repair may be appropriate when the surrounding slab remains usable.
Concrete Crack Repair Around Patios
Patio cracks can develop from:
Settlement Soil movement Shrinkage Drainage Freeze-thaw exposure If the patio remains structurally useful, localized crack repair may be worth considering.
Concrete Crack Repair Near Steps
Cracks near steps deserve attention because slab movement can alter transitions. A crack accompanied by settlement or vertical displacement may require more than filling. The: Step Slab Walkway Adjacent concrete should be considered together.
Concrete Crack Repair Near Foundations
Exterior concrete near a foundation requires attention to water movement. A crack in a driveway, sidewalk, or patio may allow water to reach the surrounding soil. The concrete should be evaluated in relation to:
Foundation drainage
Existing slope Soil conditions Settlement Water flow
Concrete crack repair should not be confused with structural foundation crack repair.
If a crack appears to involve the foundation itself, it may require a different specialist.
Concrete Crack Repair After Settlement
If a slab has settled and cracked, the crack may be only one part of the problem. Potential repairs may involve:
Concrete leveling
Concrete lifting
Void filling Crack repair Drainage correction Slab replacement The correct sequence depends on the condition.
Repairing a crack before addressing active movement may produce a poor result.
Concrete Crack Repair After Concrete Lifting
When a suitable slab has been lifted, existing cracks may still remain.
The lifting process changes slab position. It does not automatically repair every crack. Cracks can then be evaluated for appropriate: Filling Sealing Patching Monitoring This separates the lifting intent from the crack-repair intent.
Concrete Crack Repair After Mudjacking
Mudjacking may raise a settled slab, but existing cracks may remain.
The crack should be evaluated after slab movement has been addressed. This may help prevent repairing the crack before correcting the elevation problem.
Concrete Crack Repair After Polyjacking
Polyurethane foam lifting can raise and support suitable concrete. Existing cracks may still require separate attention. Foam lifting and crack repair are related but separate repair decisions.
Can Old Concrete Cracks Be Repaired?
Yes, sometimes. Older cracks can be repaired when: The surrounding concrete remains usable The crack is accessible Movement is manageable The repair method fits the condition Older concrete may also have: Previous patches Multiple cracks Surface deterioration Spalling Previous sealants Those conditions should be considered before choosing a repair.
Can Repaired Concrete Crack Again?
Yes.
Concrete remains exposed to:
Temperature changes Moisture Soil movement Loads Freeze-thaw cycles Aging A repaired crack can reopen if movement continues. That does not mean every repair is unsuccessful; it means the surrounding conditions matter.
Why Do Concrete Crack Repairs Fail?
Common reasons include:
The Crack Is Still Moving Continued movement can reopen a repaired crack. The Underlying Slab Settles If the slab keeps dropping, the crack may return. Water Continues Entering Ongoing moisture can contribute to deterioration. The Wrong Repair Material Is Used A repair needs to fit the crack and concrete conditions. The Concrete Is Too Deteriorated If the surrounding slab is failing, localized crack repair may not provide enough benefit.
Concrete Crack Repair vs. Concrete Replacement
Repair may make sense when:
Cracking is localized The slab remains sound Movement is manageable Surface condition is acceptable
Repair can restore useful service life
Replacement may make more sense when: The slab is badly fragmented Cracking is widespread Major displacement exists
Concrete deterioration is severe
Underlying conditions cannot be reasonably corrected The remaining slab has little useful life The goal is not to repair concrete simply because it can be patched. The goal is to determine whether repair provides meaningful value.
Is Concrete Crack Repair Worth It?
It can be when the crack is localized and the surrounding concrete remains useful.
Repair may:
Reduce water entry Improve appearance Protect exposed areas Extend useful service life Prevent minor defects from becoming maintenance problems But crack repair should be evaluated in context.
Concrete Crack Repair in Cedar Rapids, Iowa
Concrete Repair Pros provides concrete crack repair in Cedar Rapids, IA, for residential and exterior concrete conditions.
Common Cedar Rapids applications include:
Driveway cracks
Sidewalk cracks
Patio cracks
Walkway cracks
Garage approach cracks
Exterior slab cracks Local conditions can include: Freeze-thaw cycles Soil movement Settlement Drainage Moisture Aging concrete If you are searching for concrete crack repair in Cedar Rapids or cracked concrete repair Cedar Rapids, we evaluate the crack and surrounding slab rather than assuming every crack requires the same treatment.
Concrete Crack Repair in Iowa City, Iowa
We also provide concrete crack repair in Iowa City, IA, and surrounding communities. Cracking may develop from: Settlement Soil movement Freeze-thaw exposure Drainage Shrinkage Aging Loading If you are searching for concrete crack repair in Iowa City or cracked concrete repair Iowa City, the condition of the surrounding concrete matters just as much as the visible crack.
Residential Concrete Crack Repair
Residential concrete crack repair may involve:
Driveways
Sidewalks
Patios
Walkways
Garage approaches
Exterior slabs The goal is to repair suitable existing concrete when localized damage does not justify replacement.
Commercial Concrete Crack Repair
Commercial properties may develop cracks in:
Walkways Entrances Parking areas Exterior slabs Loading areas
Common areas
Commercial projects may require additional consideration of:
Pedestrian traffic Vehicle traffic Access Scheduling Property management
Signs Your Concrete Cracks Should Be Evaluated
Consider having cracked concrete inspected when you notice: Cracks getting wider Cracks returning after repair Vertical displacement Water entering cracks Multiple cracks appearing together Cracking with slab settlement Broken edges Spalling around cracks Cracks near drainage problems Cracks near steps or transitions A crack that changes over time deserves more attention than a stable cosmetic defect.
Our Concrete Crack Repair Process
1. Inspect the Crack We evaluate: Width Length Depth where relevant Location Pattern Edges Surrounding concrete 2. Check for Movement We look for: Settlement Vertical displacement Separation Slab movement Adjacent elevation differences 3. Evaluate the Surrounding Concrete We check: Surface deterioration Spalling Broken edges Previous repairs Overall slab condition 4. Look for Contributing Conditions Potential contributors include: Drainage Soil movement Freeze-thaw exposure Erosion Loading Previous excavation 5. Select the Repair Approach Depending on the condition, repair may involve: Filling Sealing Patching Crack repair Leveling or lifting Replacement 6. Prepare the Crack The repair area is prepared according to the selected repair method and concrete condition. 7. Complete the Repair The selected repair is applied to the crack and surrounding concrete as appropriate. 8. Evaluate the Finished Area The repaired area is checked for: Proper fit Surrounding condition Water exposure Transitions Overall usability Frequently Asked Questions About Concrete Crack Repair
What is concrete crack repair?
Concrete crack repair is the process of addressing cracks in existing concrete using a repair method appropriate to the crack and surrounding slab.
Can cracked concrete be repaired?
Often, yes. The surrounding concrete, crack characteristics, and cause of movement determine whether repair is practical.
Does every concrete crack need to be repaired?
No. Some cracks may be minor and stable. Others may allow water entry or indicate movement and should be evaluated.
What causes concrete cracks?
Common causes include shrinkage, settlement, soil movement, drainage, freeze-thaw exposure, loading, and aging.
Can hairline concrete cracks be repaired?
Sometimes. The appropriate approach depends on whether the crack is stable, where it occurs, and the condition of the surrounding concrete.
Can wider concrete cracks be repaired?
Sometimes. Wider cracks require closer evaluation to determine whether filling, sealing, patching, slab correction, or replacement is appropriate.
Can concrete cracks be filled?
Yes, some cracks can be filled. The repair material and method should match the crack and its movement.
Is concrete crack filling the same as concrete crack repair?
Not necessarily. Filling addresses the visible opening, while crack repair considers the crack and the surrounding concrete condition.
Can a moving concrete crack be repaired?
It can sometimes be addressed, but continued movement needs to be considered when selecting the repair method.
Will concrete crack repair prevent future cracking?
Not necessarily. If soil, drainage, movement, loading, or other contributing conditions remain active, new cracking or reopening can occur.
Can settled concrete crack again?
Yes. Continued settlement can cause repaired or existing cracks to reopen.
Can concrete cracks let water underneath the slab?
They can provide pathways for water, depending on the crack and surrounding conditions.
Can concrete crack repair improve drainage?
Crack repair itself does not normally change slab slope. If settlement created a drainage problem, leveling or lifting may need to be considered separately.
Can cracked concrete be leveled?
Sometimes. A cracked slab may still be a candidate for leveling when the concrete remains sufficiently intact.
Can cracked concrete be lifted?
Sometimes. The slab must remain suitable for lifting and the cracking must be evaluated first.
Does mudjacking repair cracks?
No. Mudjacking raises the slab. Existing cracks may require separate repair.
Does polyjacking repair cracks?
No. Polyjacking raises and supports the slab. Crack repair is a separate decision.
Can old concrete cracks be repaired?
Sometimes. The age of the concrete is less important than the condition of the slab, crack, and surrounding material.
Can repaired concrete crack again?
Yes. Existing site conditions and future movement can affect the repaired area.
How much does concrete crack repair cost?
Cost depends on crack size, number of cracks, concrete condition, access, repair method, and whether settlement or other underlying conditions also need correction. Detailed pricing intent belongs to our Concrete Repair Cost Guide.
Do you provide concrete crack repair in Cedar Rapids?
Yes. Concrete Repair Pros provides concrete crack repair in Cedar Rapids and surrounding communities.
Do you provide concrete crack repair in Iowa City?
Yes. We provide concrete crack repair in Iowa City and surrounding communities.
Get a Free Concrete Crack Repair Estimate
If your concrete has hairline cracks, wider cracks, recurring cracks, broken edges, or cracks associated with settlement, do not assume the entire slab needs replacement. Show us the condition. We can evaluate the crack, surrounding concrete, slab movement, drainage, and other contributing conditions to determine whether localized crack repair, leveling, lifting, or replacement makes the most sense. Concrete Repair Pros provides concrete crack repair throughout Cedar Rapids, Iowa City, and surrounding communities. Request Your Free Concrete Crack Repair Estimate
Don't Replace Good Concrete Just Because One Area Failed.
A damaged slab does not automatically need demolition. We look at how much sound concrete remains, whether movement is active, the depth of deterioration, drainage and the surrounding conditions.
If repair is still practical, the goal is simple: save what is worth saving.
BEFOREAFTERFrom Damage to a Clear Repair Plan.
Tell us what you're seeing and upload project photos.
We look at damage, movement, drainage and surrounding concrete.
We explain whether repair makes sense and what approach fits.
Approved work is completed for the actual condition—not a generic fix.
Send the Damage. We'll Help Determine the Next Step.
Include your address, a short description and up to six photos. That's enough to start the conversation.
Repair It Before Replacement Becomes the Only Option.
Cedar Rapids · Iowa City · surrounding Eastern Iowa communities