Sinking Foundation Repair McQueeney, TX.

What sinking actually looks like on a McQueeney slab

Settlement near the river rarely announces itself all at once. These are the signs we hear about most from homeowners between FM 725 and the lake:

• A corner of the house that has dropped visibly below the rest, often on the sun-baked south or west side
• Diagonal cracks running out of door and window corners toward the slab edge, the first thing terrace-clay shrinkage produces
• Floors that pitch noticeably toward one room, or feel bouncy underfoot near an exterior wall
• Interior doors that latched fine in spring and now drag or swing open on their own by late August
• Stair-step separations in exterior brick or block mortar joints
• Gaps opening where the ceiling meets the wall, or trim pulling away from the drywall

Why river-terrace clay sinks the way it does here

McQueeney was built on ground the Guadalupe River laid down over centuries of flooding. The terrace clays left behind are high-plasticity, moisture-reactive soils, the Houston Black family that dominates these positions commonly carries a plasticity index of 40 to 60 or higher, which is about as volume-reactive as Texas soil gets.

That number matters because of what it does across a year. When the clay takes on water in a wet winter, it swells and pushes up. When a hard Central Texas summer pulls that moisture back out, the matrix tightens and the soil shrinks, sometimes enough to leave inches of void beneath a slab edge. A foundation bearing on that clay doesn't drop evenly; it loses support wherever the drying is worst, which is why a single low corner is so common here rather than uniform settlement.

The part that catches people off guard is depth. In these alluvial deposits the active, seasonally moving zone reaches well past the four-to-six feet many homeowners assume is safe. A pier that stops short of stable ground is just resting on more of the same moving clay, and it will re-settle within a few dry cycles.

Steel piers driven to refusal

Our fix for a sinking slab is galvanized steel piers driven hydraulically beneath the affected area. Because the crew watches driving resistance in real time, each pier stops only when it meets genuine load-bearing refusal, not at an arbitrary number on a chart. In McQueeney's layered terrace stratigraphy, that often means punching through alternating clay and sandy lenses before reaching strata the seasons no longer touch.

Once a pier column hits competent material, the bracket transfers your foundation's weight off the unstable clay and onto that deep anchor. Settlement stops, and we recover whatever lift the structure can safely take back toward level. A steel-pier repair typically runs between $4,500 and $14,000 depending on how many piers the slab needs and how reachable the work area is, and the whole system carries a lifetime warranty that transfers to the next owner, which matters when a buyer's inspector starts asking about foundation history.

Most homes stay fully occupied while we work, and financing is available so early warning signs don't have to wait until the scope grows.

How a McQueeney repair comes together

McQueeney sinking foundation questions, answered