Foundation Crack Repair Using Polyurethane Injection
A Common Cause of Basement Water Intrusion
In homes with poured concrete foundations, one of the most frequent sources of basement water leaks is cracks in the foundation walls. These cracks often form over time due to hydrostatic pressure, which builds when water-saturated soil presses laterally against the wall, stressing the structure.
While these cracks can appear alarming, they are extremely common and—if caught early—can be repaired quickly and cost-effectively with a polyurethane crack injection.
At Schmitt Waterproofing, we specialize in reliable foundation crack repair using polyurethane injection to stop basement leaks at the source. Contact our team today to schedule an inspection and get a long-lasting solution for your home.
How Foundation Cracks Injection Form
As water builds up outside your foundation, it saturates the soil, adding weight and increasing lateral pressure on your walls. This pressure forces cracks to widen—especially toward the top of the wall where it is less tied to the footing. These cracks typically:
- Start narrow at the bottom and widen toward the top
- Form due to settlement, temperature fluctuations, or hydrostatic pressure
- Allow water to pass through during rainstorms or snowmelt
At Schmitt Waterproofing, we inspect both interior and exterior conditions to identify not only the crack itself but also the underlying cause. Unlike many competitors, we don’t just seal the crack-we help stop it from returning. Foundation cracks are often part of a larger water management issue, which is why effective repairs may require more than crack injection alone. Along with foundation crack injection, we also provide basement waterproofing, fingerspace drains, retaining walls, and exterior yard drainage and grading solutions to help relieve water pressure and protect your foundation in the long term. Contact us today to schedule a professional inspection and receive a customized solution for your home.
Our Foundation Crack Repair Services
Protect and Strengthen Your Foundation with Polyurethane Injection for Leaks and Carbon Fiber Reinforcement for Structural Support.
Polyurethane Injection
Polyurethane injection seals leaking cracks in poured concrete foundation walls using a low-pressure method. This technique forms a watertight barrier through the entire wall thickness, preventing water intrusion effectively—without the need for drilling or extensive foundation work.
Carbon Fiber Reinforcement
Carbon fiber reinforcement stabilizes foundation walls and strengthens cracked concrete without extensive excavation. This modern, minimally invasive solution prevents further wall movement, protects structural integrity, and provides a durable, long-lasting fix for foundation issues.
Protect What Matters Most
Our Proven Crack Repair Method: Low-Pressure Polyurethane Injection
We use low-pressure polyurethane injection, the industry-standard for waterproofing non-structural foundation cracks. This process involves:
- Placing injection ports every 8–10 inches along the visible crack
- Surface-sealing the crack to contain the injected material
- Flushing and cleaning the crack channel to ensure adhesion
- Injecting flexible polyurethane, which travels through the full 9" wall thickness and seals the crack watertight
- Monitoring for any signs of pressure loss or incomplete fill to ensure complete coverage
This solution not only stops current leaks, but also prevents future water intrusion, thanks to the material’s flexibility and long-term durability.
Repairing Pipe Penetration Leaks in Foundation Walls
Cracks and leaks also frequently occur where utility lines, such as water or sewer pipes, pass through the foundation wall. These points are particularly vulnerable during heavy rains.
We use a similar low-pressure polyurethane injection technique to repair these areas without drilling into your foundation. This includes:
- Prepping and sealing the wall around the pipe
- Placing injection ports
- Flushing out and injecting polyurethane to form a watertight seal
With our combined expertise in drainage and waterproofing, we ensure your retaining wall is built to last—and protect your home from future water problems.
Structural Evaluation & Reinforcement
Why Choose Us for Foundation Crack Repair?
- Specialists in polyurethane injection for concrete foundation leaks
- Trained to assess and handle both structural and non-structural cracks
- We investigate exterior drainage and grading issues for a full-scope solution
- Serving homeowners throughout North Georgia with all-inclusive repairs
Schmitt Waterproofing proudly provides professional foundation crack injection services across North Georgia, serving homeowners in Fulton, Gwinnett, Cherokee, Cobb, Forsyth, Dawson, and Hall Counties. Wherever you’re located, our team delivers precise crack repair solutions designed to stop leaks and protect your foundation long term.
Get a Professional Foundation Crack Assessment Today
Foundation cracks won’t fix themselves – and water intrusion can cause serious damage if ignored. Trust Schmitt Waterproofing to deliver fast, permanent crack repair using tested, effective methods.
FAQs About Foundation Crack Repair
What causes cracks in poured concrete foundation walls?
Cracks in poured concrete walls are most commonly caused by hydrostatic pressure, soil settlement, temperature changes, and natural curing shrinkage of concrete. Over time, water-saturated soil exerts pressure on the outside of the foundation wall, which can lead to fractures—especially if the exterior drainage system is not functioning properly.
Are all foundation cracks a sign of structural damage?
No, not all cracks indicate structural problems. Many vertical or diagonal cracks are considered non-structural and can be effectively repaired with polyurethane crack injection. However, horizontal cracks, wide bowing, or signs of movement should be evaluated by a professional to determine if structural reinforcement, such as carbon fiber straps, is needed.
What is polyurethane crack injection?
Polyurethane crack injection is a low-pressure method used to fill and seal leaking cracks in poured concrete foundation walls. A flexible polyurethane resin is injected into the crack, where it expands and forms a watertight seal through the entire wall thickness. It’s ideal for non-structural water leaks and is the industry standard for most residential repairs.
How long does a crack injection repair last?
When installed correctly, polyurethane crack injections can last for decades. The material remains flexible and can move with the foundation as it expands or contracts, providing long-term protection against water intrusion. Schmitt Waterproofing uses professional-grade materials for durability and peace of mind.