Patio and Porch Leveling Across the Carolinas

When a patio or porch slab settles, the problem often affects more than appearance. A slab that has dropped toward the house can reverse the drainage it was poured to provide, sending rainwater back toward the foundation.

In the Piedmont around Charlotte, Greensboro, and the Triangle, the cause is usually expansive clay that swells and shrinks with the seasons, often right where backfill against the foundation was never fully compacted.

Along the coast near Wilmington and Brunswick County, a high water table and saturated sandy soils create their own settlement, and around Asheville, runoff on sloped lots can wash out the soil beneath an outdoor slab. The result is an uneven patio or porch slab, sometimes with cracks across the patio where it lost support.

Patio and porch leveling lifts the settled slab back to its original elevation and restores the slope it needs to shed water away from the home. We drill small ports through the slab and pump material beneath it under controlled pressure, using expanding polyurethane foam until it rises evenly back to grade and the void that let it drop is filled.

The gap that often opens between a settled porch and the house closes back up as the slab returns to position. Because we lift the existing concrete and leave it in place, the work preserves decorative finishes and stamped surfaces that would be hard to match with a new pour. A slab that sounds hollow but has not dropped may only need a void beneath it filled.

Lifting is the right approach when the patio or porch slab is structurally sound and simply sitting too low. It is not the answer when the slab is broken apart, or when a porch is supported by a settling structural footing, which is a different repair.

During the inspection we determine which situation you are in. Where a lifted slab also has surface wear, the concrete resurfacing explainer covers how an overlay renews a worn top. It is the same approach of starting with an inspection behind all of our concrete leveling services.