Professional Foundation Crack Repair in St. Louis
If you have noticed cracks in your basement walls, water leaking through your foundation, or signs that your foundation walls are shifting, it is important to have the issue inspected before it becomes worse. Foundation wall cracks are more than cosmetic. They can create weak points in your foundation, allow water to enter your basement, and lead to larger structural issues over time.
At Perma Jack of St. Louis, we help homeowners and business owners throughout the St. Louis area repair cracked foundation walls and protect their properties from future damage. Our team has repaired thousands of foundation wall cracks on both interior and exterior basement walls. Whether your cracks are caused by settlement, hydrostatic pressure, bowing walls, or normal foundation movement, we can inspect the problem and recommend the right repair solution.
For nearly 50 years, Perma Jack of St. Louis has provided trusted foundation repair and basement waterproofing solutions for residential and commercial properties across St. Louis and the surrounding counties. If you have noticed wall cracks, floor cracks, water seepage, or signs of foundation movement, contact our team today.
Our Foundation Wall Crack Repair Solutions
Foundation cracks can appear for several different reasons, which is why every repair should begin with a professional inspection. Some cracks only need to be sealed to stop water intrusion. Others may indicate pressure against the foundation wall, bowing movement, or settlement that requires a structural repair solution.
Perma Jack of St. Louis offers professional wall crack repair systems designed to seal cracks, stabilize foundation walls, and help prevent future damage. Depending on the type, size, location, and cause of the crack, our team may recommend one or more of the following solutions:
Foundation Wall Crack Repair
Interior and Exterior Foundation Crack Repair
Foundation Settlement Repair
Carbon Fiber Crack Repair
Epoxy Crack Injection
Polyurethane Crack Injection
Basement Waterproofing Solutions
Bowed Wall Repair
Our goal is to identify what caused the crack, repair the damage correctly, and help protect your basement and foundation from future problems.
Looking for Foundation Crack Repair service in St. Louis?
What Causes Wall Cracks in St. Louis Basements?
Foundation wall cracks are common in the St. Louis area because local homes are often exposed to changing soil conditions, moisture, hydrostatic pressure, and long-term foundation movement. Cracks may appear in poured concrete walls, concrete block walls, or along mortar joints.
Some of the most common causes of basement wall cracks include:
Foundation Settlement
When soil beneath a home shifts, compresses, or fails to support the foundation evenly, sections of the foundation may settle. This movement can create stress in basement walls and cause cracks to form.
Hydrostatic Pressure
When water builds up in the soil around your foundation, it creates pressure against the basement walls. Over time, this pressure can force water through existing cracks or contribute to new cracking and bowing.
Bowing Foundation Walls
Lateral soil pressure can push foundation walls inward. As the wall begins to bow or shift, cracks may form horizontally, diagonally, or in a stair-step pattern along block walls.
Expansive Clay Soil
St. Louis-area soil often contains clay, which can expand when wet and shrink when dry. This constant movement puts stress on basement walls and foundations.
Poor Exterior Drainage
When gutters, downspouts, grading, or yard drainage do not move water away from the home, excess moisture can collect near the foundation and increase pressure against basement walls.
Aging Foundations
Older homes may develop cracks as materials age, soil conditions change, or previous repairs begin to fail. Even cracks that appear minor should be evaluated before they allow water intrusion or structural movement.
Common Signs You Need Wall Crack Repair
Foundation wall cracks can show up in several different ways. Some are easy to spot, while others may first appear as water stains, musty odors, or damp areas in the basement.
You may need professional wall crack repair if you notice:
- Vertical, diagonal, horizontal, or stair-step cracks in basement walls
- Cracks along concrete block mortar joints
- Water leaking through foundation wall cracks
- Damp spots, staining, or mineral deposits near a crack
- Cracks that appear to be widening over time
- Bowing or inward movement in a basement wall
- Floor cracks near the foundation wall
- Musty basement odors or signs of moisture
- Previous crack repairs that are leaking again
Foundation cracks do not usually fix themselves. If the soil pressure, water problem, or structural movement continues, the crack may worsen and lead to additional foundation or waterproofing issues.
How We Fix Foundation Wall Cracks
The right repair method depends on what caused the crack and whether the issue is mainly structural, waterproofing-related, or both. During an inspection, our team evaluates the crack pattern, wall condition, moisture activity, and any signs of wall movement or foundation settlement.
Perma Jack of St. Louis may recommend carbon fiber reinforcement, epoxy crack injection, polyurethane crack injection, basement waterproofing, or a related structural repair depending on your home’s needs.
Carbon Fiber Crack Repair
Carbon fiber is a strong, low-profile repair option used to reinforce cracked or bowing foundation walls. Carbon fiber strips are bonded directly to the wall with a high-strength epoxy resin. Once installed, they help absorb pressure and prevent the crack from growing.
Carbon fiber crack repair is often a good option because it is:
- Extremely strong
- Low profile
- Installed from inside the basement
- Usually completed without exterior excavation
- Designed to provide long-term reinforcement
- Paintable after installation
- Maintenance-free once properly installed
Because carbon fiber strips sit close to the wall surface, they can often be painted to blend in with the existing basement wall.
1. Wall Preparation
Before installation, the wall surface is prepared so the carbon fiber system can bond properly to the foundation wall.
2. Carbon Fiber Installation
Carbon fiber strips are applied to the wall using a high-strength epoxy system designed to reinforce the damaged area.
3. Wall Finishing
After the repair is complete, the low-profile carbon fiber strips can be finished or painted to match the surrounding wall.
Epoxy Crack Injection
Epoxy crack injection is commonly used when a concrete foundation crack needs structural bonding. The epoxy fills the crack and bonds to the surrounding concrete, helping restore strength at the damaged area.
This method may be recommended when the crack is dry or when the main concern is structural reinforcement rather than active water seepage. Epoxy injection can help stop the crack from worsening and protect the concrete around the damaged area.
Polyurethane Crack Injection
Polyurethane crack injection is often used to seal foundation cracks that are allowing water into the basement. The polyurethane resin is injected into the crack, where it expands and forms a flexible, watertight barrier.
This flexibility allows the repair to handle small amounts of movement caused by changing soil and weather conditions. Polyurethane injection is especially useful for cracks where water intrusion is the main concern.
Foundation Crack Repair vs. Basement Waterproofing
Not every wall crack requires a full basement waterproofing system, but some cracks are a sign of a larger moisture problem. If water is collecting around your foundation, sealing one crack may not solve the underlying issue.
During your inspection, our team will determine whether the crack can be repaired on its own or whether additional waterproofing may be needed. In some cases, a complete solution may include:
- Crack injection
- Interior drainage
- Sump pump installation
- Exterior drainage improvements
- Bowed wall repair
- Foundation settlement repair
The goal is to stop the water, repair the crack, and address the conditions that caused the problem in the first place.
Our Wall Crack Repair Systems vs. Temporary Fixes
| Repair Consideration | Caulk or Surface Patch | DIY Crack Sealant | Professional Crack Injection | Carbon Fiber Reinforcement |
|---|---|---|---|---|
| Seals the full depth of the crack | No | Sometimes | Yes | Not the primary purpose |
| Helps stop water intrusion | Temporary | Sometimes | Yes | May be paired with sealing |
| Provides structural bonding | No | No | Epoxy: Yes | Yes |
| Helps prevent crack growth | No | No | Sometimes | Yes |
| Designed for foundation movement | No | Limited | Polyurethane: Yes | Yes |
| Professional diagnosis included | No | No | Yes | Yes |
| Long-term repair approach | No | Limited | Yes | Yes |
Surface patches and DIY sealants may hide a crack for a short time, but they usually do not address the full depth of the crack or the pressure behind the wall. A professional repair starts by identifying the cause of the crack and choosing the right system for the condition of the foundation.
Contact Our Team for Foundation Wall Crack Repair in St. Louis
If you have noticed cracks in your basement walls or floors, water leaking through your foundation, or signs of wall movement, contact Perma Jack of St. Louis. Foundation cracks can lead to basement waterproofing problems and may weaken the structural integrity of your foundation over time.
Our team will inspect the issue, explain what is causing the crack, and recommend the right repair solution for your home or business.
Call 636-225-2553 or fill out our online form to schedule your estimate.
Wall Crack Repair Reviews
Foundation Crack Repair In St. Louis, MO
Very responsive and has a great team working to get the jobs done. Office team is very knowledgeable and I would recommend them to family and friends and colleagues.
Bowed Wall Repair In Ballwin, MO
Repair Technician was prompt, professional and a job WELL DONE. Pricing is right and no hesitation to refer to anyone who needs foundation problems fixed right.