Sinking Foundation Repair New Braunfels, TX.

Is your foundation actually settling, or just old?

Not every crack means a sinking foundation, but this short list is what tends to show up in New Braunfels homes when a slab or pier-and-beam is losing support underneath:

• Diagonal cracks running off the upper corners of doors and windows, the classic signature of a corner dropping.
• Stair-step cracking through the mortar joints of brick veneer, often widening toward one end of the wall.
• Doors and windows that bind in late summer, then ease up after the fall rains, a seasonal tell on clay soils.
• Gaps opening between interior trim and the ceiling, or crown molding pulling away at the miters.
• Floors that slope enough to feel it underfoot, or a marble that rolls toward one wall on its own.
• Springy or hollow-sounding spots on a slab where the concrete has lost contact with the soil beneath it.

Two different soils, one repair, which side of the escarpment are you on?

New Braunfels is split by the Balcones Escarpment, and the split matters more here than almost anywhere else in the region. West of the divide, homes sit on thin, rocky soil over Edwards limestone. The problem there isn't swelling clay, it's voids, fractures, and solution channels in the rock, plus a shallow soil layer that offers no deep reserve of support once it erodes or a tree root dries it out. When those foundations move, they tend to drop abruptly and locally rather than sagging gradually.

East of the escarpment, and especially down in the bottomlands near the Guadalupe and Comal, the story flips. Here you're on deep alluvial clays with plasticity indices commonly in the 40 to 60 range, Blackland-type material that expands and contracts hard with every wet and dry cycle. The active zone, the depth of soil that actually changes moisture and volume, routinely runs 8 to 15 feet down in Central Texas. Anything bearing inside that zone is anchored to ground that never stops moving.

A long dry summer pulls water out of the upper clay, the soil shrinks, and the foundation loses support at the edges. When the rain comes back the clay swells, but never uniformly, because it never dried out uniformly. That uneven push and pull is where the diagonal cracks and racked door frames come from, and it's why a repair on the east side has to reach past the clay entirely. You can read more about how we handle that on our main foundation repair page.

Why galvanized steel, and why depth is the whole game

The fix for both sides of town is the same principle: get the load off the soil that's moving and onto strata that isn't. Galvanized steel piers are driven in connected sections, hydraulically, using your home's own weight as the reaction force, until each one hits refusal on competent load-bearing strata. Around New Braunfels that can be anywhere from 10 to 25-plus feet down, depending on how deep the active zone runs before the pier stops advancing under pressure.

That reach is the difference that matters. Concrete pressed piers are stacked cylinders that frequently stop short, still inside the moving clay, and can drift over time. Steel goes deeper because it's driven as a continuous member, not balanced segment on segment. And the galvanizing earns its keep here specifically: the river-bottom soils around town carry chloride-rich groundwater that's corrosive, so a galvanized pier holds its structural capacity for the life of the building instead of degrading.

Depth alone doesn't finish the job, though. Water management does the rest, and it's the part homeowners control. Grade around the slab should fall at least 6 inches over the first 10 feet away from the house, so runoff moves off instead of pooling. Keep soaker hoses and drip lines 12 to 18 inches back from the slab, watering right against clay creates a swell zone that can distort even a completed repair. If your lot fights you on either count, our drainage and erosion control crews handle the correction alongside the piering.

How a GroundLock repair goes, start to finish

New Braunfels foundation questions, answered