Slab Foundation Repair in New Braunfels, TX
Most houses in New Braunfels, TX rest on a concrete slab poured straight onto the ground, so it moves when the soil does. For homes across Comal County with cracks or uneven floors, this page explains what slab repair involves and how to ask a local company to look.
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Inspections, estimates and repairs are carried out by a local foundation repair company. See our Referral Marketing Disclosure.
What Slab Foundation Repair Involves
A slab on grade has no crawl space. The concrete sits on prepared soil with thickened beams around the edge. When clay under one edge dries and shrinks, that edge can drop while the middle stays put; when the clay swells, part of the slab can heave instead.
Repair usually means supporting the low part from below. A company digs beside the beam, presses steel or concrete piers down to firm bearing, and jacks the slab back toward level. Because a leak in a buried drain line can keep soil soaked in one spot, ask whether a plumbing test should come before any lifting.
Issues a Pro Addresses With Slab Foundation Repair
- Edges that settle. The outside beam drops at a corner or along one wall, often where soil dries fastest in summer.
- Cracks through floor tile. Tile that splits in a long line across a room can follow a crack in the concrete beneath it.
- Center heave. Clay swelling under the middle of the house can push the floor into a slight dome.
- Leaks under the slab. A broken supply or drain pipe can wet the soil below one room; a plumber usually finds it with a pressure or camera test.
What Moves the Price of Slab Foundation Repair
On a slab, cost turns on how many piers go in, whether any must sit inside the house, and whether plumbing repairs come first. These are national figures from home-cost websites, not prices we set or a bid for your house.
| Cost row | Figure | Source (year) |
|---|---|---|
| Slab vs. pier and beam repair | slab about $1,000 to $10,000; pier and beam about $2,000 to $15,000 or more | HomeGuide (2026) |
| Steel piers, per pier | about $1,000 to $1,600 | HomeGuide (2026) |
| Slab leveling (mudjacking / polyjacking), per sq ft | about $3 to $6 / $5 to $25 | Angi (2026) |
Mudjacking and polyjacking mostly apply to driveways, patios and walks. For a pier-based range, open the cost calculator; the cost guide lists every source row.
From Inspection to Finished Slab Foundation Repair
- Fill out the form. Note where the cracks are and whether your water bill has jumped. We read the details and set up a visit with a local foundation specialist.
- The company measures the slab. During its own inspection, the company records floor elevations across every room.
- Plumbing gets checked if needed. When a leak is suspected, a plumbing test can come first so a broken line gets fixed first.
- You review the scope. The written plan should show pier count and locations on a drawing, any interior work, the City permit and the warranty terms.
- Piers, lift and cleanup. Workers press the piers, raise the slab in stages, fill the holes and take a final round of readings.
Why Small Movement Becomes Big Repairs
Blackland clays like Houston Black, the Texas state soil, swell when they take on water and shrink as they dry. The NRCS soil description says this kind of soil can crack open from half an inch to 4 inches wide in a dry season,.
In May 2025 the Edwards Aquifer Authority moved the San Antonio Pool to Stage 5 as the aquifer hit its lowest level since 1990, and flow at Comal Springs, the largest spring complex in Texas, fell to about 53 cubic feet per second. Dry spells like that pull moisture from under slab edges first. Downspout extensions, soil sloped away from the walls and trees kept back from the beam all help.
Quick Answers on Slab Foundation Repair
Are cracks in a garage slab a sign of trouble?
Not always. Thin shrinkage cracks show up in most concrete as it cures and are often harmless. Cracks that widen, sit higher on one side, or match problems inside the house are worth a foundation company's look.
Why would a foundation company ask about my water bill?
A sudden rise in water use can point to a leak under the slab, which can swell clay in one spot or wash soil away. Local plumbers note that freezes and long dry spells can both crack pipes, so a plumbing test is a common early step.
Can a slab be lifted all the way back to level?
Not always. Concrete that has sat out of level for years may crack if forced too far, so many companies lift to a practical point. Ask how much lift to expect.
How do I check a company before signing?
Texas has no state license for foundation repair. Inside city limits, ask for proof of City registration, then a certificate of liability insurance, the written warranty terms, and whether a professional engineer will evaluate or seal the plan.
Other Foundation Work to Consider
For methods and causes in general, start with the foundation repair overview; raised homes with a crawl space fit pier and beam foundation repair better, while foundation crack repair and house leveling cover sealing and lifting. The warning signs quiz and the Texas foundation repair rules are good first reads.
Find a Slab Repair Pro in New Braunfels
Tell us about the slab through a short request, and we will book a visit with a local foundation specialist. The specialist inspects the house, checks for slab leaks and writes the estimate. Sending the form costs nothing, and the decision stays with you.