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
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.
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.
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.
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?
If the limestone is so shallow here, why does my slab still move?
How deep will the piers have to go on my house?
Will the big live oak near my house keep causing problems?
Do I really need to fix this now, or can it wait?
Is the free elevation survey genuinely free, or a sales setup?
Will my family have to move out while you do the work?
Does the warranty mean anything if I sell the house later?
Book your free
foundation inspection.
Tell us where you are and what you’re seeing. A GroundLock structural advisor confirms within one business hour.
All foundation services in Boerne
Every GroundLock service, available throughout Boerne and the surrounding area:
Get your free foundation inspection.
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.