Slab foundation repair in Victoria, Texas
Most homes built in Victoria over the last several decades sit on a concrete slab. Here's what happens when part of one loses support, and how it gets put back on something solid.
A slab-on-grade foundation is a reinforced concrete slab with deeper beams around the outside and often across the middle, poured directly on prepared ground. On the expansive clays around Victoria, the soil just outside that perimeter beam sees the biggest moisture swings. It dries out in full sun and wind, gets soaked by roof runoff, and dries again. The clay deep under the center of the house stays steadier. When the edge soil shrinks and pulls away, that section of slab loses support and sags.
What does a sinking slab look like?
- Brick cracks stepping up from a corner, usually wider at one end
- A line of cracked floor tile crossing a room
- Doors on the low side that rub at the top of the frame
- A widening gap where the brick meets the window frames
- Soil pulled back from the slab edge during dry weather
How is a sunken slab fixed?
- Measure. A floor elevation survey across the whole house shows the high and low points and how far apart they are.
- Find the cause. Drying soil, poor fill, roof runoff, tree roots and plumbing leaks leave different patterns in the readings.
- Plan the piers. Piers go under the perimeter beam where it has dropped, plus interior piers only where the readings show they're needed.
- Install and lift. Each pier is driven to its stopping point, then the slab is raised as far as it can safely go and set on the piers.
- Backfill and follow up. Excavations are closed, and cracks are repaired after the house has settled onto its new support.
What if the center is high instead?
That's heave, and smectite clay is prone to it. The usual cause is extra water getting under the slab, often from a leaking supply or drain line, or from water ponding against the house after Gulf storms. Edge piers won't bring a heaved center down. If the high spot sits near the kitchen or bathrooms, a contractor may suggest a plumbing leak test before anything else.
Will the floor be perfectly flat afterward?
Usually not. Slabs are lifted to a practical target rather than to level, and some cracks close while others stay. Ask what the target is, what might happen to tile, drywall and doors during the lift, and whether any cosmetic damage is covered.
We don't quote prices. The contractor prices the job after measuring the floors and working out what's moving the house. Any figure given before that is a guess.
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Common questions
Will my floors be torn up?
Usually not. Most slab piering is done from outside by digging next to the perimeter beam. Interior piers, if the plan calls for them, mean cutting small openings in the floor at those spots.
Should I get a plumbing test first?
If the readings show a high area near plumbing, or the water bill has climbed, a leak test can rule a leak in or out before you pay for piers. Ask the contractor whether they'd recommend one.
Related services
- Pier-and-beam foundation repair
- Foundation piers
- Foundation drainage and moisture control
- Foundation inspections and crack repair
More background: Victoria County foundation repair guide.
Cracks in the brick, a door that won't latch, or a floor that feels off?
Call and a foundation contractor who works in Victoria County will come measure the house and explain what's moving and why.