Slab Foundation Repair New Braunfels, TX.
New Braunfels slabs sit on a geologic seam, Edwards limestone on the high ground, deep Guadalupe and Comal river clay in the bottoms. We read which force is moving your slab before we quote a single pier.
How a slab repair actually unfolds here
Survey the slab
We shoot a free elevation survey accurate to ±0.01 in. (1/64 in.) across every reference point, mapping the true shape of the distorted slab instead of guessing from the most visible drywall cracks.
Find the bearing stratum at each pier
Because limestone depth and clay behavior can differ from one slab edge to the other, we confirm where solid support actually lives before locking pier locations and a fixed price.
Drive galvanized steel past the moving soil
Each pier is pressed hydraulically through the active clay zone, or the thin residual soil over fractured limestone, until it reaches load-bearing strata that won't shrink or swell.
Lift, level, and lock the scope
We recover elevation in a controlled sequence tied to the survey, then back everything with a lifetime transferable warranty; most homes stay occupied the whole time.
Two soils, sometimes one lot
Drive from the uplands down toward the Guadalupe and the ground changes character completely. On the high side of town, Edwards limestone can sit a foot or two under the finished grade. Slabs there rarely fight shrink-swell, instead they lose support suddenly, where the rock is fractured, solution-weathered, or capped by thin clay pockets that wash out over the years. When a void opens under a slab corner, bearing disappears all at once, and you get sharp diagonal cracks and stair-stepping through the brick.
Closer to the Comal and Guadalupe corridors, the story flips. The river-deposited clays down there are high-plasticity material, plasticity indices commonly from 40 to over 60, and they move. A wet La Niña winter after a couple of drought years can swing their moisture content 10 to 15 points, pushing the active zone anywhere from 6 to 15 feet deep depending on drainage, trees, and grading. That's why a slab can behave like two different foundations at its east and west edges.
Diagnosing which of those forces is at work is the whole game. A crack that's wider at the top of a door corner usually reads as interior settlement; wider at the bottom points to edge heave. The direction changes the repair scope, and it's exactly what the elevation survey is built to tell us before anyone quotes a number. Long-term, pairing the piers with sound drainage keeps moisture from concentrating on one side again.
Why depth is what holds in Comal County clay
Steel piers are driven in connected sections that reach the stable strata under the active zone. Concrete pressed piers are stacked cylinders that often stop inside the clay that's still shrinking and swelling, and can drift with it.
On soil with a plasticity index north of 40, reaching depth is the difference between a fix that lasts and one that re-moves the next dry summer.
Signs your New Braunfels slab is telling you something
Catch these early and you intervene before settlement gets expensive:
- Diagonal cracks at door and window corners, wider at the top means interior settlement, wider at the bottom means edge heave.
- A door that binds or won't latch on one side of the house while the rest swing fine, which signals differential movement, not uniform settling.
- Gaps wider than 3/16 inch between the slab edge and brick veneer or trim boards. Visible gaps mean measurable settlement has already happened.
- Soil pulling away from the foundation perimeter in a dry summer, a direct sign the clay is in a shrinkage cycle.
- Standing water within 10 feet of the slab after a storm, or downspouts aimed at the foundation, concentrating moisture on one side.
- Grade that doesn't drop about 6 inches over the first 10 feet away from the house, letting water linger against the perimeter.
New Braunfels slab repair questions
What's the price range for fixing a slab in New Braunfels?
Do you work in Gruene and the rest of Comal County?
My slab cracks near the river but my neighbor's is on rock, why the difference?
Will the wall and ceiling cracks close after you lift the slab?
How is steel piering different from concrete pressed piers?
Can I stay in the house while you do the repair?
What can I do to keep the movement from coming back?
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 New Braunfels
Every GroundLock service, available throughout New Braunfels 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.