Residential Foundation Repair Selma, TX.

A slab in Selma can read perfectly level in March and show a clear drop in one corner by late summer, with nothing about the house having changed in between. The ground is what moved. Sitting in the Cibolo Creek watershed, Selma's lots are built on some of the most reactive clay in Bexar County, high-plasticity vertisols that gain and lose volume with every wet-and-dry cycle.

That seasonal push and pull is what cracks the brick, racks the door frames, and tilts the floors. Repairing it well means getting underneath the moving layer entirely, not chasing the symptoms on the surface. Below is how that soil behaves on local lots, what the warning signs actually mean, and the way we set a foundation back onto something that doesn't shift with the weather.

What movement looks like in a Selma house

These are the patterns that send most local homeowners looking for an inspection, and the ones an engineer reads as a load path through the structure:

• Interior doors that suddenly stick, drag, or drift open on their own
• Diagonal drywall cracks fanning out from the corners of door and window frames
• Stair-step cracks tracking the mortar joints in exterior brick veneer
• Floors that slope, bounce, or feel uneven underfoot, often worst toward one corner
• Gaps opening between crown molding and the ceiling, or between trim and the wall
• Cracks in the slab itself or where the garage floor meets the foundation

Why the active zone decides everything

The clay under Selma carries plasticity indices that commonly run past 40, which puts it in the most aggressive category soils are graded by. When it rains through the spring, that clay swells and presses up and out against your slab edges and grade beams. By midsummer it shrinks back and leaves voids under the interior slab where there used to be support. The slab follows the soil down.

The part most homeowners never hear about is the active zone, the depth of soil that actually responds to moisture, which in this stretch of the San Antonio corridor runs roughly eight to fourteen feet down. Any pier that stops inside that zone is still gripped by the same forces moving the dirt. Pressed-concrete cylinders are usually set only five to ten feet deep, against whatever resistance they meet, and in swelling clay that resistance can simply be clay in a temporarily firm state. When it rewets, the pier heaves right along with it.

Our galvanized steel piers are driven hydraulically to refusal on genuine load-bearing strata below that zone, often anywhere from ten to twenty-five-plus feet, depending on the lot. Because the geology under Selma firms up at depth, that's where lasting support lives. The pier cap brackets to the foundation beam, and load transfers down the steel column to competent material, taking that section of the house out of the clay's reach.

How a Selma repair actually runs

Selma foundation questions, answered