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Boerne · Kendall County

Residential Foundation Repair Boerne, TX.

Boerne sits on a thin layer of high-plasticity clay laid right over Edwards Plateau limestone, close enough to feel like rock, deep enough to move. We measure first, then drive galvanized steel piers to load-bearing strata.

Foundation trouble in Boerne rarely looks like a house slowly sinking into deep mud. Out here the ground tells a stranger story: a shallow mantle of expansive clay draped over fractured Edwards Plateau limestone, with the rock often only 8 to 12 feet down. The clay carries a plasticity index somewhere in the 30-to-50 range, so it swells after a wet spring and shrinks hard through a Hill Country summer, and because that limestone is karstified and unevenly weathered, water threads through the fractures and wets clay pockets in patches rather than evenly.

The result is differential movement instead of the whole-house settling you see in the Blackland clays east of the Balcones Escarpment. One corner heaves while another drops, and the first thing a homeowner usually notices is a single door that won't latch or one racked corner of brick, not an obviously crooked house. That's exactly why we lead with measurement, not a visual guess, on every Boerne slab we look at.

How a Boerne repair actually goes

01

Free elevation survey

We shoot your slab to ±0.01 in. (1/64 in.) across every control point and show you, in writing, which areas are displaced and by how much.

02

Engineered pier plan

From those numbers we set the count, spacing, and target depth of each pier to a structural spec, built to a third-party engineer's standard, not a sales worksheet.

03

Drive, lift, and lock

Galvanized steel piers are driven hydraulically to refusal on competent limestone below the active clay, then the slab is raised and its load transferred onto the steel.

04

Re-survey and warranty

We re-shoot the elevations, document the final position, and close out with a lifetime transferable warranty before the crew leaves your property.

Why steel piers, and why driven to the rock

The whole repair hinges on one idea: get the structural load off the soil that's moving and onto something that isn't. In Boerne that usually means seating piers into the limestone itself rather than counting on friction through the clay. A pressed-concrete pier that stops short inside the active zone will simply ride the seasons along with the slab it was meant to fix, which is why we don't use them here.

Galvanized steel piers are driven to refusal, meaning they keep going until they stop advancing under hydraulic pressure on load-bearing strata. There's no fixed depth to quote in advance; around Boerne that can be anywhere from 10 to 25-plus feet depending on how the limestone weathered beneath a given footing. Because the piers land below the soil that swells and shrinks, the corrected sections don't re-settle with the next wet-dry cycle, and that's the part the lifetime warranty actually stands behind.

Most Boerne homes and buildings stay occupied while we work. Typical residential projects land between $4,500 and $14,000 depending on pier count, access, and whether drainage correction is part of the plan, and financing is available so the survey isn't a commitment to spend.

Early signs worth a survey

These are the symptoms Boerne homeowners call us about most, usually long before the house looks visibly off:

  • A door that suddenly sticks or won't latch in dry weather, then frees up after rain
  • Stair-step cracks running through the mortar joints of exterior brick or stone
  • Diagonal drywall cracks fanning out from the upper corners of windows and doors
  • Floors that slope, bounce, or feel uneven from one room to the next
  • Gaps opening where walls meet trim, ceilings, or the fireplace surround
  • Cracks appearing in the slab edge or across the garage floor

Cracks that come and go aren't the slab fixing itself

A lot of Boerne homeowners wait because cracks that opened in the summer drought seem to close back up after a wet spring. That's the expansive clay breathing, not the structure healing.

Each swing fatigues the slab and widens the crack network a little more. An objective elevation survey tells you whether you're watching normal seasonal flex or real, progressive movement, and it costs you nothing to find out.

Boerne foundation repair, answered

My cracks close up after it rains, is my foundation actually fine?
That open-and-close pattern is classic Boerne clay swelling and shrinking with moisture; it's not the slab repairing itself. Every cycle fatigues the structure a little, so the question isn't whether cracks appear and vanish, it's whether the underlying movement is progressive. A measured elevation survey answers that without guesswork.
If the limestone is so shallow here, why does my slab still move?
Because the trouble lives in the few feet of high-plasticity clay sitting on top of the rock, and the limestone underneath is fractured and unevenly weathered. Water moves laterally through those fractures and wets the clay in patches, so support changes within a single foundation footprint, that's what produces one sunk corner instead of uniform settling.
How deep will the piers have to go on my house?
To refusal on load-bearing strata, which isn't a number we can promise sight unseen. Around Boerne that's commonly 10 to 25-plus feet, depending on how far down the active clay runs and where the competent limestone sits beneath each footing. The piers stop when they stop advancing under hydraulic pressure.
Will the big live oak near my house keep causing problems?
It can. Live oaks and cedar elms common around Boerne pull moisture aggressively from shallow clay, and a large tree within 15 to 20 feet of the foundation can dry out a localized pocket and pull the soil away from the edge beam. Piering stabilizes the structure; managing moisture and drainage around that tree keeps the un-piered soil from misbehaving.
Do I really need to fix this now, or can it wait?
Movement guided by clay almost never reverses on its own, and waiting usually means more piers and a higher cost once cracking gets severe enough to be obvious. We'd rather measure your slab while the signs are still subtle, early, data-driven intervention reliably produces a better structural outcome here than waiting for the damage to make the decision for you.
Is the free elevation survey genuinely free, or a sales setup?
It's free with no obligation and no pressure visit. You get your slab mapped to ±0.01 in. (1/64 in.) and a written, engineer-backed assessment of what's happening beneath it. Whether you hire us afterward is entirely your decision, plenty of people use the report just to know where they stand.
Will my family have to move out while you do the work?
Almost never. The piers are installed from the exterior or through small interior access points, and most Boerne homes and buildings stay occupied the whole time. We'll flag the rare situation where access requires you to be out of a specific area.
Does the warranty mean anything if I sell the house later?
Yes, that's the point of it. Because the piers carry the load on steel seated below the active soil, the corrected sections don't re-settle, and the lifetime warranty transfers to the next owner. In the Boerne market a documented, warrantied repair removes a buyer objection rather than creating one.
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A licensed inspector measures your slab elevation to ±0.01 in. (1/64 in.) and gives you a written, engineer-backed plan with zero pressure.