How deep do you expect to go?
Ask what depth the design assumes on your lot and what the installer does if a pier reaches refusal much shallower or much deeper than that.
Pressed Concrete vs. Steel Piers
Both types hold houses up all over Williamson County. The short answer: the soil under your lot, the depth to firm ground and the weight being carried decide it, not a preference.
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The Short Answer
Pressed concrete piers are cylinders of concrete pushed into the ground one section at a time using the weight of the house, then capped and shimmed to carry the slab. Steel piers are pipe sections driven the same way, but they are narrower, so the same pushing force takes them deeper. In deep Blackland clay, where the ground stays active well below the surface, either can work if it goes deep enough. On lots with rock ledges, old fill or unusually deep active soil, steel often makes more sense. For a straightforward single-story house on consistent clay, pressed concrete is frequently the practical choice.
What matters more than the material is that the design is based on real measurements: where the house is low, how much load each pier carries and how deep firm ground actually sits on your lot.
| What the inspection finds | Pressed concrete piers may suit | Steel piers may suit |
|---|---|---|
| Depth to firm ground | Stable ground is reached at a moderate depth | The load-bearing layer is deep or hard to predict |
| Soil type | Deep clay where a wide pier column is driven well below the active zone | Mixed fill or rock ledges where a narrower pier can be driven past the obstruction |
| Load being carried | A typical single-story or light two-story home | Heavier structures, added second stories or commercial slabs |
| Confirmation during installation | Depth and resistance are recorded as sections are pressed | Pressure readings are taken as each pier is driven and loaded |
| Access around the house | Room to work along the affected side | Tight side yards, patios or interior work where equipment is limited |
When Pressed Concrete Piers Fit
They suit houses where the soil profile is consistent and firm ground is within reach, which covers a lot of the slab housing east of I-35. The concrete sections are wide, they bear on a large surface, and the installation is well understood. Cost per pier is usually lower, so on a long run of exterior piers along one side of a house, the difference adds up.
They are commonly used for slab foundation repair and for leveling work where the whole perimeter needs support. Ask how deep the piers are expected to go and what happens if a pier refuses early.
When Steel Piers Fit
Steel piers earn their place where the ground is awkward: fill dirt on a cut-and-fill pad, shallow rock with soft pockets underneath, or very deep clay where a wider pier would stop short of stable ground. Because each pier is driven with the house as the reaction weight, the installer can watch resistance build and stop at a measured refusal rather than a target depth.
Heavier structures are the other case. Two-story masonry, an added upper floor or a commercial slab carrying racking loads may call for steel. Tight access can also point that way, since the equipment footprint is smaller. Either way, the design belongs on the pier plan that comes with your quote.
Questions for the Inspection
How many piers, and why there?
The plan should show pier locations tied to the elevation readings, not spaced evenly around the house out of habit.
How much lift is realistic?
A house is raised as far as it can safely come without tearing finishes. Ask what the target is and what will not close up.
What does the warranty actually say?
Get the terms in writing: what is covered, what voids it, whether it transfers with the house and what an annual check involves.
Before You Decide
Get the drainage answer at the same time. Piers hold the house where it is put; keeping the moisture around the slab even is what keeps the untouched parts of the house from moving next. Our drainage and root barrier page covers that side, and the watering guide explains the seasonal routine.
If you are still weighing whether to act, read fix it now or wait, then book an inspection.
Get a pier plan for your house
Measurements first, then a written plan that says which pier type and why.