Concrete Repair in Austin, TX: When to Patch vs. Replace
Hairline crack or structural failure? An Austin contractor's playbook for diagnosing and repairing driveways, patios, and slabs without overpaying.
Why Austin concrete cracks (it's the soil, not the contractor)
Travis, Williamson, and Hays counties sit on expansive Houston Black clay. It swells when wet and contracts in drought — moving concrete every year. Add 105°F summers and freeze events, and small cracks are inevitable. The question is which cracks matter.
Types of concrete cracks & what to do
- Hairline cracks (<1/8") — cosmetic. Clean and seal.
- Shrinkage cracks — normal at control joints. Caulk with self-leveling sealant.
- Settlement cracks (>1/4", offset) — call a pro. Likely needs mudjacking or polyjacking.
- Heaving slabs — tree roots or hydraulic clay. Cut and replace section.
- Spalling surfaces — sealer failure + freeze. Grind, resurface, reseal.
Concrete repair methods we use
1. Polyurethane crack injection — for active foundation cracks 2. Polyjacking (foam lift) — sunken driveway slabs, $7 – $15/sq ft 3. Mudjacking — older, cheaper alternative 4. Saw-cut & pour replacement — for severe heaving / failure 5. Resurfacing overlay — cosmetic restoration of large patios
When to replace instead of repair
Replace if you see: multiple offset cracks, rebar exposure, slabs tilting >1", surface delamination across >30%. The replacement-vs-repair break-even is usually around 50% damaged area.
Average Austin concrete repair costs (2026)
- Crack sealing: $200 – $600
- Polyjacking driveway slab: $900 – $2,400
- Resurfacing patio (400 sq ft): $1,800 – $3,500
- Saw-cut & replace driveway section: $1,200 – $3,500
Get an honest assessment
We'll tell you when a $300 repair is better than a $4,000 replacement. Call (512) 781-8851 for a free, in-person evaluation across Austin and suburbs.