San Jose Homeowner Fixes Cracked Garage Slab with PolyLevel® and NexusPro®

Monday, April 21st, 2025 by Mike Gray

Challenge

San Jose Homeowner Fixes Cracked Garage Slab with PolyLevel® and NexusPro® Solutions from Foundation Repair of CA

Location: San Jose, CA
Service Category: Concrete Lifting & Crack Repair
Solution Provided: PolyLevel® Foam Injection + NexusPro® Crack Repair
Customer Concern: 20-Foot Crack in Garage Slab with 1/4-Inch Height Difference

The Problem: A Long, Uneven Crack in a San Jose Garage Slab

A homeowner in San Jose, California, reached out to Foundation Repair of CA after noticing a significant issue in their attached garage. A 20-foot-long crack had formed in the concrete slab, and on one end, there was a noticeable 1/4-inch height difference—a clear indication of concrete settlement. The homeowner was concerned about the crack expanding, further damaging the slab, and possibly becoming a tripping hazard or structural issue over time.

More importantly, they wanted to understand what caused the problem in the first place—and how to permanently fix it.

Solution

Our Evaluation Process: No-Cost, No-Pressure Foundation Inspection

Our San Jose-based Concrete and Foundation Specialists conducted a free, on-site inspection to evaluate the underlying cause of the concrete slab crack. After a thorough assessment, it was determined that the garage slab was experiencing differential settlement—a common issue in the Bay Area due to shifting soils and moisture changes beneath the concrete.

We provided the homeowner with a detailed diagnosis, a transparent estimate, and a same-day solution proposal tailored to permanently resolve their issue without needing to remove and replace the entire slab.

Our Solution: PolyLevel® Foam + NexusPro® Crack Repair

To stabilize the uneven concrete slab and seal the crack, our team recommended a two-part approach using cutting-edge, non-invasive products from the Supportworks® system:

✅ PolyLevel® Foam Injection

We used PolyLevel, a high-density polyurethane foam, to lift and level the sunken section of the slab with pinpoint accuracy. The foam is injected through small holes and expands beneath the concrete to fill voids, stabilize loose soils, and gently raise the slab back to level.

Minimal disruption to the garage and surrounding structure
Quick cure time — ready to use in minutes
Environmentally friendly and water-resistant

✅ NexusPro® Crack Repair

After lifting the slab, we applied NexusPro, a silicone-based, ultra-flexible sealant, to the 20-foot crack. Unlike traditional concrete caulks, NexusPro offers:

Long-term durability in extreme temperatures
UV resistance — no cracking or drying out over time
Clean, professional finish that blends with existing concrete

The Results: Restored Safety, Functionality & Peace of Mind

The result was a fully stabilized and leveled garage slab with a professionally sealed crack that will hold up for years to come. The homeowner was thrilled with the quick turnaround, clear communication, and the fact that there was no need for messy, expensive concrete replacement.

Their garage is now not only more aesthetically pleasing, but also safer, more functional, and better protected from further settlement and cracking.

Why Homeowners in San Jose Trust Foundation Repair of CA

Whether you’re dealing with cracks in your concrete garage floor, sunken slabs, or foundation settlement, Foundation Repair of CA is proud to be the go-to concrete and foundation expert for homeowners throughout San Jose and the greater Bay Area. We’ve been family-owned and operated for over a decade, delivering solutions backed by industry-leading warranties and a commitment to excellence.

Need Help with a Cracked or Uneven Garage Slab in San Jose?

Don’t wait for minor cracks to become major headaches. Get a free, no-obligation inspection from California’s trusted foundation and concrete specialists.

📍 Serving San Jose and Surrounding Communities

📞 Call us today or schedule your free evaluation online!