Foundation Settlement Repair Boerne, TX.

Boerne sits on one of the trickier subsurfaces in the Hill Country: a shallow skin of clay, often only a foot or two thick, laid over fractured Edwards limestone. That arrangement makes settlement here behave differently than it does on the deep clays closer to San Antonio. One corner of your slab may rest squarely on rock while another spans a pocket of soil, and when that soil shrinks through a long Kendall County dry season, only the unsupported part drops. The result is isolated, lopsided movement rather than a whole house sinking evenly.

The first job is telling true settlement apart from the seasonal swelling and shrinking that clay does every year. Settlement means the foundation has lost bearing support and moved down for good, it won't bounce back when the rains return. Read it wrong and you either panic over a crack that closes itself each winter or ignore a corner that's quietly dropping for keeps. A measured elevation survey is what separates the two, and that's where every project we run in Boerne begins.

Early signs the ground under your slab has shifted

Most Boerne calls start with one of these, and they almost always lead back to uneven support beneath the foundation:

• A single low corner you can feel underfoot or see in a marble that rolls the same direction in more than one room.
• Doors that drag or gap diagonally, clustered in one quadrant of the house, not just one lone sticky door after a drought.
• Stair-step cracks in brick or stone mortar, especially ones that are wider at the top, which point to a foundation segment rotating.
• A gap opening where the wall meets the ceiling, or trim pulling away from the drywall.
• Cracks in the slab itself or at the garage apron, often where engineered fill meets native rock on a cut-and-fill lot.

Why steel piers, and not pressed concrete, on Boerne lots

Because the clay layer is thin, the active zone, the depth where seasonal moisture actually moves the soil, is shallow here. That sounds like good news, but it isn't a reason to stop short. The pier has to bypass that zone entirely and land on competent limestone or dense material that never sees seasonal moisture change. Pressed-concrete piers are stacked cylinders that often come to rest inside the moving soil and can drift; on a footprint where support changes within a few feet, that's exactly where they fail.

We use hydraulically driven galvanized steel piers, advanced in connected sections through the clay and the weathered limestone surface to refusal on stable strata below. Around Boerne that depth varies a lot, anywhere from roughly 10 to 25-plus feet, because solution weathering riddles the rock with voids and soft pockets. Each pier is driven under the actual dead weight of your structure, so the resistance we record at refusal is the real load being transferred, not a number estimated off a soil boring. That load-test-in-place behavior is what makes driven steel the right tool for ground this unpredictable.

One Boerne wrinkle worth flagging: many newer subdivisions out here were built on post-tensioned slabs. Before any pier goes in the ground, the cable layout gets reviewed so placement and lift never cross a tendon. It's a detail a generic crew skips and a careful one never does.

How a settlement repair runs from survey to warranty

Stopping the next drop

Piering carries the settled section on steel below the active soil, so those areas shouldn't ride the seasons again, that's the part the lifetime transferable warranty covers. But the piers don't change what's moving the ground in the first place. On Boerne's thin-soil, sloped lots, the moisture differential at the slab edge is what fatigues the clay and accelerates the next round of movement.

That's why lasting results usually pair the repair with water management. Finished grade should fall away from the house, roof runoff should be carried off rather than dumped at the footing, and irrigation near the perimeter should hold moisture steady instead of swinging wet-to-bone-dry. Where it protects the foundation, we fold in drainage correction and erosion control, and only where it actually earns its place in the scope.

Get measured before you commit to anything. A site-specific survey routinely either trims or expands the scope a homeowner expected from looking at cracks alone, and the survey plus written plan cost nothing. Typical Boerne projects land between $4,500 and $14,000 depending on pier count, access, and drainage, financing is available, and nearly every home stays occupied while the work is done.

Boerne foundation settlement questions, answered