Stop Cracks in Your Concrete
Cracks in concrete are a common problem for both homes and commercial properties. Over time, soil movement, water infiltration, and natural settling can cause concrete slabs to shift and crack. While small cracks may appear minor at first, they can grow larger and allow water to reach the soil beneath the slab, which can lead to further damage.
STL Polyjack provides professional concrete crack repair in St. Louis, MO to restore the strength and appearance of damaged concrete surfaces. Our team identifies the cause of the cracking and uses proven repair methods to seal, stabilize, and protect the concrete from future deterioration.
Why Concrete Cracks
Concrete is strong, but it can crack when the ground beneath it moves or loses support. Changes in soil conditions and moisture levels are some of the most common causes of concrete cracking.
Common reasons concrete develops cracks include:
- Soil settling beneath the slab
- Water erosion beneath the concrete
- Temperature expansion and contraction
- Poor soil compaction during construction
- Heavy loads placed on the concrete surface
When cracks form, water can begin to seep beneath the slab and create voids that weaken the support below the concrete.
Signs Your Concrete Needs Crack Repair
Not every crack requires immediate attention, but some cracks indicate deeper structural issues.
You may need professional crack repair if you notice:
- Cracks widening over time
- Multiple cracks forming across the surface
- Water entering the cracks after rain
- Uneven slabs near cracked areas
- Pieces of concrete breaking or chipping away
- Concrete shifting or settling around the crack
Addressing these issues early can prevent larger repairs in the future.
Cracks in concrete are often connected to soil movement or voids beneath the slab. If the concrete has also begun to settle, Saint Louis Polyjack may recommend driveway leveling, walkway and sidewalk leveling, or patio leveling to restore the slab’s position. In some cases, empty spaces beneath the concrete may require void filling to strengthen the soil and prevent further settlement.
Free Concrete Leveling Estimate
Customers can also send photos of the problem area for a faster quote.
Why Property Owners Choose Saint Louis Polyjack
Serving St. Louis, Sunset Hills, Fenton, Kirkwood, Ballwin, Chesterfield, and surrounding communities.
Our Fix: Professional Concrete Crack Repair
Saint Louis Polyjack uses proven repair methods to seal and stabilize cracked concrete surfaces. Our goal is to stop water intrusion, prevent further movement, and restore the durability of the slab.
Our repair process typically includes three key steps:
1. Inspect the Concrete Surface
We evaluate the crack to determine the cause of the damage and identify whether settlement or soil movement is involved.
2. Seal and Repair the Crack
Specialized materials are applied to fill and seal the crack, preventing moisture from entering and protecting the slab from further deterioration.
3. Stabilize the Underlying Support
If necessary, we address voids beneath the slab using methods such as polyurethane lifting or void filling to restore support under the concrete.
Benefits of Concrete Crack Repair
Repairing cracks early helps prevent more serious damage to concrete surfaces.
Some of the main benefits include:
- Prevents water from entering beneath the slab
- Stops cracks from growing larger
- Protects the structural integrity of the concrete
- Improves the appearance of the surface
- Extends the life of the concrete slab
- Helps avoid costly concrete replacement – saving up to 50%.
By sealing and stabilizing cracks early, property owners can prevent more extensive repairs later.
Why Choose STL Polyjack
When concrete starts to sink or settle, choosing the right contractor matters. STL Polyjack brings over a decade of experience and more than 1,200 completed lifts across the St. Louis area. We focus on fixing the root cause—not just the surface—using advanced polyurethane foam injection to lift and stabilize concrete without the cost and disruption of replacement. When you work with our team, you can expect:
- Over a decade of hands-on experience
- 1,200+ concrete lifting projects completed locally
- Polyurethane foam designed for long-term support
- Minimal disruption to your home or business
- Completed in hours, not days, with same-day use
- Honest evaluations and straightforward recommendations
- Repairs backed by a 5-year warranty
Whether the project involves a residential driveway, uneven sidewalk, patio, commercial slab, or structural repair, our goal is to deliver a repair that restores safety, stability, and confidence in your concrete surfaces.
FAQs – Concrete Crack Repair
Clear answers about repairing cracks, preventing future damage, and protecting your concrete surfaces.
Small hairline cracks can be normal as concrete cures and settles. However, larger cracks or cracks that continue to widen may indicate soil movement or structural issues.
In many cases, yes. If the concrete slab is structurally sound, cracks can often be sealed and stabilized without replacing the entire surface.
Yes. Sealing cracks helps prevent water from reaching the soil beneath the concrete, which can reduce erosion and void formation.
If the slab has settled, it may need lifting in addition to crack repair. Saint Louis Polyjack often combines crack repair with concrete leveling to restore the slab properly.
Most crack repair projects can be completed quickly depending on the size and number of cracks present.
Yes. Addressing cracks early helps prevent additional damage and can extend the lifespan of the concrete surface.
Trusted by Leading Businesses
Areas We Serve
STL Polyjack proudly serves homeowners, businesses, and property managers across the St. Charles and St. Louis area. With over a decade of experience, we provide polyurethane concrete leveling, lifting, and structural repair solutions that restore sinking concrete without the cost of replacement. From driveways and sidewalks to warehouse floors and parking lots, we keep properties safe, level, and stable.
Serving St. Louis & Surrounding Communities
- St. Charles, MO
- St. Louis, MO
- Sunset Hills, MO
- Fenton, MO
- Kirkwood, MO
- Webster Groves, MO
- Ballwin, MO
- Chesterfield, MO
- Crestwood, MO
- Arnold, MO
- Manchester, MO
- Des Peres, MO
- Ellisville, MO
- Town and Country, MO
- Oakville, MO
- Affton, MO
- Clayton, MO
- Maryland Heights, MO
- Bridgeton, MO
- Florissant, MO
- University City, MO
If you have sinking or uneven concrete around your property, we can evaluate the issue and recommend the best solution.
We offer free estimates, and you can even send photos for a fast quote.
About Saint Louis Polyjack
Saint Louis Polyjack specializes in polyurethane concrete leveling, lifting, and structural repair throughout St. Louis, MO and surrounding communities. We raise and stabilize sinking driveways, sidewalks, patios, pool decks, warehouse floors, and more using advanced poly foam technology.
Our process is fast, clean, and long-lasting — backed by a 5-year warranty.
Office Location : 12951 Gravois Rd. Ste. 100 St. Louis, MO 63127
Uneven Concrete? Don’t Replace It — Lift It.
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Serving St. Charles, St. Louis, Sunset Hills, Fenton, Kirkwood, Webster Groves, Ballwin, Chesterfield, Crestwood & Arnold.
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