Concrete Crack Repair Services
We provide structural repair for warehouse floors, parking decks, and industrial slabs. A crack is not a cosmetic issue; it's a structural failure and a safety hazard.
Why Repairing Cracks is "Asset Protection"
A crack or a failed control joint is a direct threat to your assets. It's not just a "crack"; it's a point of failure that will only get worse.
- Safety Hazard: Cracks and "spalls" (where the joint edge has broken) are a trip hazard for employees and a direct cause of forklift accidents.
- Equipment Damage: Running forklifts (especially hard-wheeled lifts) over even small cracks destroys their expensive tires and suspension.
- Structural Failure: An open crack allows water and chemicals to seep into the slab, corroding the rebar and leading to catastrophic structural failures.
Our Process: Structural Polyurea & Epoxy Fillers
Our repair process is structural, not cosmetic. We don't "caulk" a crack; we rebuild it from the inside out to make it stronger than the concrete around it.
- Chase the Crack: We use a diamond-bladed concrete saw to "chase" (open up) the crack into a clean, uniform joint.
- Clean & Prep: We thoroughly clean the joint with a HEPA-filtered vacuum to ensure a perfect bond.
- Fill & Cure: We fill the prepared joint with a specialized structural filler. We use flexible polyureas for "active" control joints that need to move, and rigid epoxies for "static" random cracks that need to be "welded" shut.
- Grind Flush: Once cured, we diamond-grind the repair perfectly flush with the existing floor, creating a seamless, smooth surface.
This process restores the structural integrity of your floor and allows for a smooth, safe transition for forklifts and foot traffic, a critical service for our logistics clients in Tracy and Modesto.
DIY vs. Pro: The "Caulk" Trap
A "DIY" repair using a caulk gun and a hardware store "concrete caulk" is a temporary, cosmetic fix that will fail. These materials are not structural. They will crack, shrink, and pull away from the concrete within months, leaving you with the same problem, but now it's full of failed caulk that must be removed.
Failed "Caulk" (The "Hobbyist")
This cheap, non-structural caulk has shrunk and pulled away from the joint, re-opening the crack and trapping dirt.
Polyurea Joint Fill (The "Pro")
A structural, flexible polyurea filler is installed and ground perfectly flush. This is a permanent, safe repair.
★★★★★
"4RENT transformed our Tracy warehouse. Their Line Striping was precise, and the Concrete Crack Repair handled all our forklift damage. We passed our safety audit with flying colors."
Concrete Crack Repair FAQs
What's the difference between a "crack" and a "joint"?
A **control joint** (the square lines you see) is a "planned" crack cut into the concrete to control where it cracks as it cures. A **crack** is an "unplanned" failure due to stress, shrinkage, or foundation settling. Both can be a hazard, but they are repaired with different materials.
Can you repair a crack before polishing or coating?
You *must*. Repairing all cracks and joints is a mandatory part of our "Substrate Preparation" process. We would never install a new epoxy or polished concrete floor over a "live" crack. The crack would simply "reflect" through the new floor in months.
What is a "spall"?
A spall is a broken-down edge of a control joint. When a hard forklift wheel hits the sharp, 90-degree edge of a joint, the concrete shatters and "spalls" away, creating a wide, V-shaped trench that is extremely dangerous. We repair these by re-building the joint edge with a high-strength epoxy mortar.