Foundation Crack Repair
Foundation cracks let water in and get worse over time. A-Proseal seals cracks from the inside using professional-grade epoxy and polyurethane foam that stops leaks and strengthens your wall. Fast, affordable, and backed by a lifetime warranty.
Foundation Cracks Are Extremely Common in Chicago Homes
Nearly every poured concrete foundation develops cracks at some point. In Chicago, the freeze-thaw cycle makes this happen faster. Water in the soil around your foundation freezes in winter and expands with tremendous force. When it thaws in spring, the pressure releases and leaves gaps. This cycle repeats dozens of times each winter, and each time your foundation takes more stress.
A crack in your foundation wall is more than just a cosmetic issue. Even a thin hairline crack can let water seep into your basement during heavy rain. Over time, that crack grows wider. Water freezes inside the crack and pushes it open even more. What starts as a tiny line can become a major leak that damages your walls, flooring, and belongings.
A-Proseal repairs foundation cracks using two proven methods. For structural cracks, we inject high-strength epoxy that bonds the concrete back together and restores wall strength. For leaking cracks, we use flexible polyurethane foam that expands to fill the entire crack from front to back and stays flexible so it moves with your foundation without breaking the seal.
Most crack repairs take just a few hours and can be done from inside your basement with no digging required. Every repair comes with a lifetime warranty.
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Signs You Need Foundation Crack Repair
Not all cracks are the same. Here is what to watch for in your Chicago home.
How We Repair Foundation Cracks
Crack Assessment
We examine every crack in your foundation and figure out what caused it. We check the width, direction, and depth of each crack to determine whether it needs epoxy for structural strength or polyurethane foam for waterproofing. You get a clear explanation and a written estimate.
Professional Injection
We install injection ports along the crack and inject the repair material under pressure. The epoxy or foam fills the crack completely from the inside surface all the way through to the outside of the wall. This creates a waterproof, structural bond that lasts for the life of your foundation.
Seal and Warranty
After the injection cures, we remove the ports and smooth the surface. We inspect the repair to make sure the crack is completely sealed. You get a written lifetime warranty on every crack we fix. If it ever leaks again, we come back and repair it at no cost.
What You Get With Our Crack Repair
Epoxy Crack Injection
High-strength epoxy fills the crack and bonds the concrete back together. It cures harder than the concrete itself, restoring structural strength to the wall. Best for non-moving, structural cracks.
Polyurethane Foam Injection
Expanding foam fills the entire crack and stays flexible after it cures. It moves with your foundation through freeze-thaw cycles without breaking the seal. Best for leaking cracks and active water intrusion.
Full-Depth Repair
Our injection process fills the crack from the inside surface all the way through to the outside soil. This is not a surface patch. The entire thickness of your wall is sealed and protected.
No Exterior Digging
Most crack repairs are done entirely from inside your basement. There is no need to dig up your yard, move landscaping, or disturb your driveway. It is faster, cleaner, and less expensive.
Same-Day Service
Most foundation crack repairs are done in just a few hours. Our team arrives, does the work, and leaves your basement dry and repaired the same day. No long projects or multi-day disruptions.
Lifetime Warranty
Every crack repair comes with a written lifetime warranty. If a crack we repaired ever leaks again, we come back and fix it at no charge. It is that simple.
Why Chicago Homeowners Trust A-Proseal
Crack repair is only as good as the materials and the team doing the work. A-Proseal uses professional-grade products and trained technicians on every single job.
Crack Repair Questions Chicago Homeowners Ask
Epoxy is a rigid material that bonds concrete back together and restores structural strength. It works best for cracks that are not actively moving. Polyurethane foam is flexible and expands to fill the crack completely. It is the better choice for cracks that are actively leaking or in walls that move slightly with the seasons. Our team will inspect your crack and recommend the right method.
Most single crack repairs take about one to two hours. If you have multiple cracks, we can usually fix them all in one visit. The material cures within 24 hours, and the repair area can be painted or covered once it is fully set. It is one of the fastest foundation fixes available.
When done correctly, a crack injection is a permanent fix. Our materials fill the crack from front to back and create a seal that lasts for the life of the foundation. We back every repair with a lifetime warranty. If it ever leaks again, we come back at no charge.
It depends on the type and size. Small vertical cracks are very common and usually caused by normal concrete shrinkage. They are not a structural threat, but they do let water in. Horizontal cracks and wide diagonal cracks can signal serious soil pressure on your walls. Any crack that is leaking water should be repaired before it gets worse.
In most cases, no. We do the entire repair from inside your basement. The injection fills the crack all the way through the wall from inside to outside. There is no need to dig up your yard, move landscaping, or disturb anything outside your home. It is faster, cleaner, and less costly than exterior repairs.
Yes. Once the repair material is fully cured (usually within 24 hours), you can paint right over it. Our team smooths the surface as much as possible so the repair blends in. If you plan to finish your basement, the repaired crack can be covered with drywall just like any other part of the wall.
Other Services You Might Need
Basement Waterproofing
A complete waterproofing system stops all water from getting into your basement. Drain tile, sump pumps, and wall barriers working together.
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Foundation Repair
If your cracks are caused by a settling or shifting foundation, piers and wall anchors can stabilize your home and prevent further damage.
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Interior Drain Tile
Drain tile catches water at your foundation footer before it reaches your floor. Pair it with crack repair for complete basement waterproofing.
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