Basement waterproofing / Slab Jacking and Concrete Leveling
Slab Jacking and Concrete Leveling in Houston, TX
Lift sunken concrete slabs with precision foam injection to eliminate trip hazards, improve drainage, and protect your foundation.
Sunken concrete slabs often show up as cracks in driveways, uneven sidewalks, or a garage floor that slopes toward one side. Water may pool in low spots, creating a slip hazard. In Houston, the clay soil beneath concrete can shrink during dry spells and swell after heavy rain, causing slabs to settle unevenly. You might also hear a hollow sound when you tap the concrete, indicating a gap beneath the surface.
First, the crew drills small holes in the slab, typically about 5/8 inch across. They insert injection ports and pump polyurethane foam under the concrete. As the foam expands, it fills voids and lifts the slab to the desired height. The operator checks the lift with a level, then seals the holes with a concrete patch. The work is usually finished in a few hours, and you can walk on the area the same day after the foam cures.
Cost depends on slab size, thickness, and how many lifts are needed. If the slab is behind a fence or near landscaping, labor may increase. In Houston, a permit is usually not required for residential slab jacking, but if the work impacts a public right-of-way or a structural part, an inspection may be needed. Leaving a settled slab alone can cause more cracking, drainage issues, and higher replacement costs later.
Common questions
Is slab jacking a permanent fix for sunken concrete?
It can be long-lasting, but longevity depends on soil stability. In Houston's clay soils, the foam resists further settlement if the underlying soil remains stable; however, ongoing moisture changes may require additional lifts.
How long does the slab jacking process take?
Most projects are completed in a few hours per slab, depending on size and number of injection points. You can usually use the area the same day after the foam has cured.
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