Sinking Foundation Repair Schertz, TX.

Signs a Schertz Foundation Is Sinking

Settlement damage shows up first at the weakest points of the structure. In homes across Schertz, these are the details that separate normal aging from a foundation actively losing bearing support:

• Diagonal stair-step cracks in exterior brick, especially climbing above windows and doorways where mortar joints are weakest
• Doors and windows that stick, drift out of square, or leave a wedge-shaped gap at the top corner
• Floors you can feel slope underfoot, or a marble that rolls toward one wall of a room
• Gaps opening between crown molding, cabinets, or countertops and the wall behind them
• Trouble concentrated at a garage corner, a bay window, or a room addition built on shallower footings than the original house
• Cracks that seem to close up during a wet spring, then reopen wider once summer dries the ground out

The Cibolo Creek Clays Under Your Slab

Schertz sits on a hydrologically busy stretch of the Balcones transition zone, where Blackland Prairie soils drape the Cibolo Creek drainage corridor. The dominant series here is Houston Black clay, and its plasticity index commonly lands between 40 and 60, a technical way of saying this ground swells hard when it drinks water and shrinks hard when it dries out.

That volume swing is the whole story. Every wet season the clays heave upward; every summer drought they contract and pull away from the footings resting on them. When the drying reaches deeper than the active zone the original foundation was built to span, often eight to twelve feet below grade here, the footings lose support and the structure above starts to drop.

What actually damages a home is not uniform sinking but differential settlement. When one corner falls faster than the areas beside it, the structure racks: frames go out of square, brick develops those diagonal cracks, and floors tilt. The gaps you notice are lagging indicators, by the time they're visible, measurable movement has already been building for a season or more.

Why Steel Piers Are the Right Tool Here

For sinking driven by clay consolidation in Schertz soils, the fix has to get below the moving ground entirely. GroundLock drives galvanized steel piers hydraulically, pushing them straight through the shrink-swell zone until they seat on competent load-bearing strata below. Once a pier reaches that depth, seasonal moisture no longer governs whether your foundation stays put.

This is where pressed-concrete piers tend to fall short, literally. They frequently stop inside the active zone, still resting in soil that swells and settles, which is why those repairs so often come back. Steel driven to refusal on stable strata bypasses the problem instead of parking on top of it. Our foundation repair page covers the full pier system.

Stabilizing on piers is only half the job, though. If storm runoff and irrigation keep soaking the perimeter clays unevenly, the moisture swings continue. That's why we pair the structural fix with drainage corrections, perimeter grade should fall at least six inches over the first ten feet, and sprinkler heads belong eighteen to twenty-four inches back from the slab edge. Lifting a house without managing the water just resets the clock.

How a GroundLock Repair Goes in Schertz

Schertz Foundation Questions, Answered