The causes of sunken concrete are the same, whether it's a driveway, walkway, patio, garage floor, or pool deck. As the soil underneath a concrete slab shrinks or settles, it leaves a space or voids beneath the slab. When the soil no longer supports the slab, the concrete will sink, resulting in an uneven surface.
Polyurethane foam injection fills the voids and stabilizes and lifts sinking concrete slabs. The expanding properties of the polyurethane foam allow for accurate leveling of the slab. It results in waterproof repair that's more permanent than other common concrete repair methods.
Step 1
Small holes are strategically drilled in the slab.
Step 2
Foam injection ports are installed.
Step 3
Expansive polyurethane foam is injected to support and level the slab.
Step 4
The drilled holes are patched and smoothed out.