Foundation Leveling McQueeney, TX.

Reading the movement before we lift anything

The clay under most McQueeney lots is high-plasticity material, a plasticity index above 35 and a liquid limit well over 50. In plain terms, it soaks up a large volume of water before it goes soft, then gives that volume back just as dramatically when it dries. The layer where that cycling happens, the active zone, usually runs 6 to 10 feet below grade in a river-terrace setting, and reaches deeper near the river where the water table sits close.

A foundation resting on or inside that active zone rides the seasons up and down. Over the years, that movement shows up as floors that pitch toward one corner, doors that stick in dry summers, and diagonal cracks running off the tops of door and window frames. Slab-on-grade construction, which is nearly every house around the Guadalupe Lakes area, feels it first.

A reinforced or post-tension slab is built to spread the home's weight evenly across the soil. Once one section drops more than another, differential settlement, the concrete carries bending loads it was never designed for and cracks along the tension face. That's the stair-step you see at brick corners and the diagonal lines fanning out from openings.

What our free elevation survey tells us about your home

Before a single pier goes in the ground, we map the slab to ±0.01 in. (1/64 in.) across the whole footprint. That survey drives everything that follows:

• Exactly where the slab has settled and by how much, point by point across a measured grid, a dropped corner and a mid-span sag call for different plans.
• The target lift at each pier location, written into an engineer-backed plan rather than eyeballed on site.
• The pier count and spacing your specific distress pattern requires, from a handful along one wall to a couple of dozen.
• How exterior drainage, grade, and vegetation near the footing are feeding the movement.
• A firm, fixed scope and price you approve before any work starts, no open-ended estimates.

Driving past the clay, then protecting the fix

Pier depth is the whole game in an alluvial valley. Our galvanized steel piers are hydraulically driven until they hit load-bearing strata below the active zone, the point where soil moisture no longer controls the movement. In Guadalupe terrace soils that usually means pushing well past the clay into the caliche or dense gravel underneath, which gives consistent bearing. Depth to refusal varies from lot to lot, so we drive to stable strata rather than a fixed number, and pressed-concrete piers often stop short inside the moving soil. Most homes stay occupied while the crew works, a lifetime transferable warranty follows the structure rather than the owner, financing is available, and typical projects land between $4,500 and $14,000.

Getting the house level is only half the job, keeping water off the bearing soil is what makes the lift hold. Grade should fall at least six inches over the first ten feet away from the foundation, and on McQueeney's flat terrace lots that often takes regrading and sometimes a French drain to catch lateral water before it reaches the clay. Solving standing-water and slope problems is its own discipline, and our drainage and erosion-control work is built to protect exactly this kind of repair.

The last piece is landscaping discipline. Keep irrigation and beds 18 to 24 inches back from the foundation, and watch the trees, live oak and cedar elm along the Guadalupe corridor pull moisture out of the clay right next to the footing, creating a dry pocket that undoes what the piers just corrected. For how leveling fits with the rest of our foundation repair work, that page has the full picture.

McQueeney foundation leveling questions