Stabilize Rocking Slabs
Rocking slabs are a common issue in commercial buildings, warehouses, and industrial sites. When concrete panels shift or tilt under load, it indicates poor subgrade support and potential structural risk. Our polyurethane injection process fills voids beneath the slab and re-establishes contact with the base. This stabilizes the slab, eliminates rocking, and prevents future movement.
What Is Rocking Slab Repair?
Rocking slab repair is the process of stabilizing concrete panels that move under pressure. These slabs may tilt, pivot, or shift slightly when walked on or driven over due to subgrade voids or erosion.
Using expanding polyurethane injection, we fill hidden gaps beneath the slab and apply upward pressure that re-supports the structure. This eliminates the movement without the need for replacement.
Where Might This Be Needed?
- Tilt-up warehouse floors
- Facility entrances and loading docks
- Cold storage facilities
- Indoor production areas
- Concrete panel joints under forklifts
- Parking deck slabs
We Recommend This Repair Solution If You See:
- Panels that rock or shift under weight
- Audible clicking when slabs are loaded
- Cracking near slab joints
- Unstable shelving or racking
- Complaints of vehicle bounce or impact
- Widening gaps between slabs
- Loss of joint sealant or filler
- Changes in slab height across joints
Is Rocking Slab Repair Necessary?
Yes. Rocking slabs can lead to ongoing surface damage, compromised safety, and even structural degradation. They are often the first sign of a void forming beneath the slab.
Repairing rocking slabs with polyurethane injection stabilizes the panel, restores its load-bearing function, and protects adjacent slabs from future movement. Early intervention helps avoid major structural issues and downtime.
What Are the Advantages of Rocking Slab Repair?
Stop movement before damage spreads.
Restores Stability: Prevents tilting and rocking under load.
Non-Invasive: No slab removal or excavation required.
Fast Turnaround: Repaired slabs return to service in hours.
Reduces Equipment Damage: Eliminates impact from bouncing machinery.
Extends Concrete Life: Stops cracking and edge spalling.
Common Problem Areas
- Forklift paths in warehouses
- Loading dock thresholds
- Transition zones between pours
- Aisleways and slab junctions
- Drive lanes over loose fill
- Elevated slabs with voids beneath
Stop Rocking Slabs Fast with Groundworks’ Polyurethane Injection Solutions.
How Does Rocking Slab Repair Work?
Simple process, lasting results.
- Identify rocking slab panels and affected zones
- Drill small injection ports through slab
- Inject expanding polyurethane to fill voids
- Monitor movement and stabilize panel in place
- Test for stability and adjust as needed
- Patch injection holes and clean site
Why This Is the Best Choice
- Targets movement at the source
- Minimizes downtime and disruption
- Works in live industrial environments
- Avoids full panel replacement
- Prevents damage to surrounding slabs
- Protects inventory and equipment
- Supports weight loads immediately
- Trusted in commercial and warehouse settings
Contact Groundworks for Rocking Slab Repair
Get stable, secure flooring fast.
If your slabs are rocking, tilting, or shifting under pressure, Groundworks can help. Our polyurethane repair process restores contact and support to stop the movement before it becomes costly. Schedule a free inspection today.
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FAQs
Most rocking occurs due to subgrade voids, erosion, or poor fill compaction beneath the slab.
Yes. Repairs are quick, clean, and can often be done while operations continue.
No. In most cases, we can stabilize and save the existing concrete using polyurethane.
Yes. Polyurethane stays in place and resists water and movement over time.
Listen for audible movement, look for visible gaps at the joints, or test by applying load.
Disclaimer / Terminology
Rocking Slab: A concrete panel that shifts or tilts due to insufficient base support.
Polyurethane Injection: A process of injecting expanding material beneath the slab to stabilize and lift. Void: An empty or eroded area beneath the slab surface.
Subgrade: The soil or material below a slab that provides foundational support.
Spalling: Surface chipping or cracking from slab movement or edge impact.