Mudjacking vs. Polyurethane Foam — Which Is Right for Your Job?
Both methods lift settled concrete by filling the void beneath it and using that material's pressure to raise the slab. The mechanism is the same. The material — and the tradeoffs that come with it — are different.
Here's a straight comparison.
The Methods Side by Side
| Mudjacking | Polyurethane Foam | |
|---|---|---|
| Material | Cement, sand, water slurry | Two-component expanding polymer |
| Weight | ~100 lbs per cubic foot | 2–4 lbs per cubic foot |
| Vehicle cure time | 24 hours | 1 hour |
| Foot traffic | Few hours | 15–30 minutes |
| Water resistance | Good in dry conditions; can erode with sustained moisture | Excellent; water-resistant and inert |
| Precision of lift | Good | Very good (fine incremental control) |
| Cost | Lower | 20–50% higher |
| Longevity | 8–15 years typical | 15–25+ years typical |
| Injection holes | 1.5–2 inch | 5/8–1 inch (smaller) |
| Track record | 80+ years | ~30 years widespread use |
When Mudjacking Is the Right Call
Standard residential driveways and sidewalks. When the concrete is structurally sound, drainage is acceptable, and there's no rush on return-to-use, mudjacking delivers a solid result at a lower cost.
Large void volumes. For jobs requiring significant material — large driveways with substantial settlement, commercial slabs with deep voids — mudjacking's lower material cost can make it significantly more economical without meaningful performance compromise.
Cost-sensitive applications. When the primary driver is minimizing repair cost and the site conditions favor it, mudjacking is the right tool.
When Poly Foam Is the Right Call
Pool decks. Lower weight on compromised fill soil, water resistance, fast cure, and precision lift control all argue for foam in pool applications.
Stamped and decorative concrete. Fewer, smaller injection holes mean fewer patches on a surface where aesthetics matter. Finer lift control helps preserve pattern alignment.
Areas with drainage problems or persistent moisture. Mudjacking can erode in sustained wet conditions. Foam holds indefinitely.
Garage floors and interior slabs. Foam's precision is valuable in confined spaces where overcorrection would be difficult to remedy.
Same-day return to service. If you need to drive on the surface within hours, foam is the only option.
Commercial and industrial applications. Fast cure time, light weight, and precision make foam the standard for commercial concrete leveling.
Cost Comparison
For a standard two-car driveway:
- Mudjacking: $1,200–$3,000
- Poly foam: $1,500–$4,000
The cost premium for foam is real. For most standard residential jobs, mudjacking's cost advantage is meaningful. For applications where foam's specific advantages matter — pool decks, wet areas, decorative surfaces — the premium is justified.
Which Method Do We Recommend?
We use both, and we recommend based on the job — not on margin. In our assessment, we consider:
- Drainage conditions at the site
- Whether the surface is decorative
- How quickly you need return to service
- Whether weight is a concern (pool decks, areas over compromised fill)
- Total cost in context of the job
We'll tell you which method fits your situation and why.