Guide
Pier and beam vs slab foundation repair
Most North Texas homes sit on one of two foundation types. They move for the same reason, clay soil, but they show problems differently and get repaired differently.
| Slab on grade | Pier and beam | |
|---|---|---|
| What it is | A concrete slab poured directly on the ground | Floor framing on beams and piers, with a crawl space underneath |
| Common in DFW | Most homes built since the 1960s and nearly all new construction | Many older homes, especially near historic downtowns |
| Typical signs | Drywall and brick cracks, sticking doors, cracked tile, gaps at baseboards | Sloping, bouncy or squeaky floors, gaps under doors, moisture in the crawl space |
| Typical repair | Piers installed under the slab to lift and support it, plus drainage fixes | Re-shimming, adding or replacing piers and supports, beam repair, moisture control |
| Access | Outside digging, sometimes interior access points | Mostly from the crawl space |
Slab foundations
When clay under a slab shrinks or swells unevenly, parts of the slab rise or drop. Repair usually means installing piers down to more stable soil and lifting the slab back toward level. Under-slab plumbing leaks can soften soil and are worth testing for in older homes.
Pier and beam foundations
The crawl space makes these easier to inspect and often easier to adjust. Common work includes replacing failed shims, adding supports between existing piers, and fixing beams damaged by moisture. Ventilation and drainage keep problems from coming back.
Questions
How do I know if my house is pier and beam or slab?
Look around the outside base of the house. Vents or an access door near ground level and a crawl space underneath usually mean pier and beam. If the floor sits directly on a concrete slab at ground level with no crawl space, it is slab on grade.
Is pier and beam repair cheaper than slab repair?
Often, for routine work like re-shimming or adding supports, because the crawl space gives access. Major beam replacement or extensive rot repair can still be costly.
Which foundation type is better in North Texas clay?
Both can perform well when built and maintained properly. Most newer DFW homes are slab on grade. Older homes, especially near historic downtowns, are more likely to be pier and beam.