Montgomery Foundation Co. repairs the full failure chain Black Belt clay causes: settlement (piering from $1,200/pier), slab movement (from $3,500), cracks (from $400), drainage (from under $500), and sunken concrete (from $500) — each preceded by a free measured evaluation.
Foundation Piering & Underpinning
Steel piers driven past the swelling Black Belt clay to stable bearing — the permanent answer to settlement.
Slab Foundation Repair
Lifting and supporting slab-on-grade homes when the clay beneath them moves.
Foundation Crack Repair
Injection, sealing, and reinforcement for cracks in brick, block, and slab.
Drainage Correction
Moving roof and lot water away from the foundation — half the repair on this soil.
Concrete Leveling
Polyurethane lifting for sunken driveways, patios, walks, and porch slabs.
Cost Guide: What Repairs Run in Montgomery
Every repair class priced for this market, the four factors that move a quote, and how to compare bids.
Why the services come as a set
Expansive clay doesn't specialize. The same seasonal swelling that drops a footing cracks the brick above it, tilts the patio slab, and — come the next dry August — pulls support from a different corner. Companies organized around one product sell that product. We're organized around the soil, which is why an evaluation reads the whole chain and the scope only includes the links your house actually needs.
Which repair fixes which failure
| What you see | The clay mechanism | The fix | Typical range | Time |
|---|---|---|---|---|
| Stair-step cracks, dropped corners, sloping floors | Clay shrinking away from the footing in dry spells | Piers to stable bearing | $4,000–$15,000 | 2 days–1 week |
| Interior slab cracks, doors racking | Differential movement beneath a slab-on-grade | Perimeter or interior support | $3,500–$12,000 | 2–5 days |
| Cracks widening between seasons | Movement opening paths through masonry or concrete | Injection and reinforcement | $400–$1,500 | Hours |
| Water pooling at the wall, soggy beds | Roof and lot water feeding the swell cycle | Grading, extensions, drains | Under $500–$6,000 | 1–2 days |
| Stepped driveway joints, tilted patio | Flatwork riding the clay with no footing beneath | Polyurethane lifting | $500–$2,500 | Hours |
Two or more symptoms nearly always share one cause. One evaluation, one scope, one mobilization — that's the cost control this soil allows.
Sequence is the service
Anyone can install a pier. The skill here is ordering the work so it stays fixed: water managed before steel goes in, structure stabilized before finishes are repaired, cosmetics last — once movement is provably over. Our scopes are written in that order with fixed prices per line, and lines the measurements don't justify simply aren't on them.
Service questions
Which service does my house actually need?
The evaluation answers that in about an hour. Stair-step cracks with sloping floors point to piering; interior slab cracks with racked doors point to slab work; cracks alone often need injection; and water at the foundation drives a surprising share of all of it. The evaluation is free precisely so the diagnosis doesn't depend on what we'd like to sell.
Do you charge for evaluations?
No. Photos, crack measurements, a laser floor survey, and a written scope with fixed prices are free across all ten communities we serve — including the visits that end with 'mark it and watch it' rather than an invoice.
Can one crew handle structure and water together?
That's the point of the stack. Piering, slab support, crack repair, drainage, and concrete leveling are one clay problem wearing five costumes — scoping them together is how the repair holds and how you avoid paying two mobilizations for one cause.
Get a free Montgomery foundation evaluation
Tell us what the house is doing — stair-step cracks, doors that stick every August, sloping floors, separating trim — and we’ll schedule an evaluation with photos and measurements. We reply the same business day.