SLAB SUPPORT
Low-pressure Subsurface Injections to Stabilize Concrete
Stabilizing Concrete Slabs with Structural Expanding Foam Injections
Concrete slabs often crack due to compromised subsurface conditions. Over time, the soil, sand, or gravel beneath a slab can shift, settle, or wash away, creating voids under the concrete. Without proper support, the slab becomes vulnerable—any applied weight may cause it to crack, and those cracks will likely grow as the slab begins to sink.
This issue isn’t limited to surface slabs; concrete control joints can also be affected. When support beneath these joints fails, the slabs may settle unevenly, leading to trip hazards and damage to equipment like forklifts, particularly to their load wheels.
The traditional approach—cutting out and re-pouring the slab—is time-consuming, disruptive, and costly. Fortunately, there's a more efficient and long-lasting solution: low-pressure structural expanding foam injections.
How It Works
If your concrete slab hasn’t significantly settled, or if the movement is minimal, we can stabilize it with low-pressure Slab Support injections.
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Void Filling: We drill small holes and inject a structural-grade expanding foam beneath the slab. This foam is waterproof, durable, and designed to fill voids and provide immediate support to the slab above.
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Lifting and Leveling: For sunken slabs, we use a pressurized injection system. As the foam expands, it fills the empty space and gently lifts the slab back to its original, level position—permanently.
Once the slab is stabilized and properly supported, we can address surface damage. Cracks and joints are repaired using Flash Floor, a high-performance material that cures faster and lasts longer than traditional epoxy or concrete patching methods.