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Expert Basement Wall Crack Repair Services in Chicago - Perma-Seal

Our team at Perma-Seal offers professional wall crack repair services for foundation cracks in the Chicago and NW Indiana areas. Customers benefit from our services through time and money savings, as well as long-term warranties that provide peace of mind. Contact us today to schedule your free estimate.

When it comes to your home’s foundation, cracks of any shape or size are cause for concern. These basement wall cracks often cause water seepage and can indicate larger structural foundation problems that must be addressed in order to maintain the integrity of your home. Our team at Perma-Seal can help you fix foundation wall cracks whether they are in your basement or your crawl space, giving you the advantage of professional assessment and specialized products for effective sealing and waterproofing.

Our team of experts uses top-of-the-line basement crack repair equipment and techniques to repair cracks in basement walls, including leaky wall cracks, and prevent further damage. Don’t wait until it’s too late. Contact our team for wall crack repair services today.

Basement Wall Crack Repair Graphic

Are Foundation Wall Cracks Serious?

While most cracks don’t pose serious problems for the structural integrity of a home, you should keep an eye out for other signs that could indicate you have an underlying structural foundation issue as that will require a different type of repair.

Aside from potential structural issues, excess moisture caused by leaky wall cracks provides an ideal environment for mold growth, radon issues, and indoor air quality issues to occur.

Types of Wall Cracks

Large Foundation Crack

Large Wall Cracks

While hairline cracks are common in most homes with poured concrete foundations, larger cracks can indicate serious structural damage. In addition to the size of the cracks, vertical or horizontal cracks can also have different meanings.
Diagonal Basement Wall Crack

Vertical or Diagonal Cracks

Vertical or diagonal cracks are often the result of foundation settlement and are common in newer construction projects. Concrete can shrink when it cures, causing hairline cracks that may never leak. If your wall crack is wider than ½ inch, you should contact our team immediately.
Horizontal Basement Wall Crack

Horizontal Wall Cracks

Horizontal cracks are a sign of bowing or excess pressure on your foundation. They are caused by hydrostatic pressure and heavy rainfall. If you see any horizontal concrete cracks, contact our team at Perma-Seal today. These cracks can lead to bowed walls or complete foundation collapse.

How We Fix Wall Cracks

Foundation cracks are among the most common problems in basements and crawl spaces across the Chicagoland area. We offer a variety of cost-effective wall crack repair solutions designed to prevent cracks from spreading while completely sealing the crack to prevent leaks.

Before we apply any sealant, we carefully clean the area and remove any old paint, debris, or loose material to ensure proper adhesion. We use a blow-dryer or compressed air to blow away any moisture or dust from the crack, preparing the surface for repair. Sometimes, cracks are drilled at specific angles to allow for better penetration of the sealant. We then install the plastic injection ports securely onto the wall, ensuring correct placement for effective injection.

Next, we place the epoxy cartridge into a caulk gun and use the appropriate tools and techniques to spread the sealant evenly, making sure to cover the entire crack and surrounding area. Our technicians are careful to apply the sealant meticulously, avoiding plugging the injection ports so the material can flow freely. For larger cracks, we may patch them with specialized materials for added strength.

Once the crack is completely filled, we plug the injection ports to prevent leaks and allow the sealant or epoxy to cure for the specified number of days. After the sealant is fully cured, we remove the injection ports and check the repair to ensure a durable, watertight seal. The repair process may involve slightly widening the crack to ensure the material penetrates fully, and we use sand as a component in concrete, which affects how cracks form and are repaired.

Interior crack repair is often a cheaper and faster alternative to exterior methods, offering significant cost-saving and time-saving benefits for homeowners. Our solutions are designed to be durable and long-lasting, providing peace of mind. By following each step carefully and using the right materials and techniques, we ensure the best possible result for your foundation repair needs.

Interior Basement Wall Crack Repair

Epoxy Crack Injection

Depending on the size of the crack in your wall, an epoxy or polyurethane resin can be injected from the interior of the home using injection ports, penetrating all the way through the entire wall and permanently sealing the entire crack. Not only will it stop water from continuing to enter your basement, but it will also help to bind the concrete wall back together and prevent further erosion of the crack.
exterior crack repair

Exterior Crack Repair

If your basement is finished or you prefer to have the repair completed outside your home. In that case, we will excavate the area surrounding the crack and seal it with a multi-layer, waterproof membrane and urethane grout to permanently stop the water penetration.
FlexiSpan Basement Wall Crack Repair

FlexISpanTM

This system was designed to provide you with a permanent and effective solution to all types of wall crack problems, without the need to inject the cracks with epoxy or polyurethane. Instead, cracks are sealed with a flexible sealant on the surface of the crack from the top to bottom. If the crack were to ever leak again, any excess water infiltration will be directed straight into your drain tile system.

Basement Crack Prevention

Preventing cracks in your basement walls is a crucial part of maintaining your house’s structural integrity and avoiding costly repairs down the line. One of the main factors that leads to wall cracks is hydrostatic pressure—the force of water in the soil pressing against your foundation. Over time, this pressure can cause seeping water, especially in homes with poured concrete walls, resulting in hairline or even larger cracks that threaten your basement’s dryness and your home’s stability.

To minimize the risk of wall cracks, start by ensuring the ground around your foundation slopes away from your house. Proper grading and drainage are essential to keep water from pooling near your basement walls. Installing a French drain or similar system can be a highly effective way to redirect water and relieve hydrostatic pressure before it becomes a problem.

Foundation Wall Cracks

Regularly inspecting your basement walls is another key step in crack prevention. Look for early warning signs like hairline cracks, corner cracks, or any areas where water might be entering. If you find a crack, it’s important to act quickly—filling it with a suitable sealant, such as polyurethane foam, can stop water from seeping in and prevent further damage. For additional peace of mind, consider using a basement sump pump monitoring system to help detect and prevent water issues before they start. Make sure the surface is completely dry and clear of debris before applying any sealant for the best adhesion and durability.

There are several other things you can do to protect your basement walls. Keep gutters and downspouts clear so water is directed away from your foundation, and avoid planting trees or large shrubs too close to your house, as their roots can affect the soil and increase pressure on your walls. Using a dehumidifier in your basement can also help reduce moisture levels and the risk of cracks forming.

If you do spot a crack, many homeowners find that a do it yourself application with a crack repair kit is a practical solution for minor issues. These kits typically include injection ports, special tools, and enough material to fill and seal the crack. The process usually involves drilling small holes along the crack, installing the ports, and injecting the polyurethane foam or other sealant to fill the void. It’s crucial to follow the instructions carefully to avoid mistakes that could lead to further damage. Watching a video tutorial can be a great way to familiarize yourself with the process before you begin.

However, in some cases—such as when cracks are wide, spreading, or found in multiple parts of the basement wall—it’s best to consult a professional. They can determine the underlying cause, whether it’s hydrostatic pressure, structural movement, or another factor, and recommend the most suitable repair method to ensure your home’s foundation remains secure.

Taking these preventive steps and addressing cracks as soon as they’re found can save you a lot of effort and money in the long run. By being proactive about basement crack prevention, you help maintain the structural integrity of your house, keep your basement dry, and avoid the stress and expense of major foundation repairs.

Epoxy Crack Injection

Why It’s Important To Fix Wall Cracks

Repairing cracks in your foundation walls is important for several key reasons. These cracks can serve as water entry points, leading to leaks and serious water damage. This moisture can cause mold growth, compromise your home’s structural integrity, and weaken your foundation if left unchecked. Promptly addressing these issues helps prevent costly repairs down the line. Additionally, cracks in the basement can provide access to pests like insects and rodents, which can threaten your family’s health and safety. Sealing these cracks improves your home’s safety and comfort and enhances its value, making it more appealing to future buyers. By investing in basement crack repair now, you’re safeguarding your home and protecting your investment for years.

Important! DIY foundation crack repair solutions are often not enough to completely seal cracks in the long term. Using foundation crack repair kits won’t solve the problem and often cause more issues once installed.

Contact Us For Wall Crack Repair Services in Chicago and NW Indiana

If you have noticed cracks in the basement or crawl space wall, we can help. We offer permanent and affordable solutions for wall crack repair across the Chicagoland and NW Indiana areas. Contact our team by clicking the button below or calling 800-421-7325 today to schedule your free foundation crack inspection and repair estimate. 

Basement Waterproofing

Great job

Brian Watson

Basement Waterproofing and Crack Repair

Found a large crack in the foundation during a bathroom remodel. This crack was not actively leaking but it was large enough that it took more time and material to

Tracy H.

Basement waterproofing

Michael kulis was very helpful and informative. He has a wonderful personality and made us very comfortable and confident.

MICHELLE C BOHANNON

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