An honest, no-sales-pitch comparison for Salt Lake Valley homeowners — cost, longevity, cure time, and what matters on Utah soil.
| Mudjacking | Polyurethane foam | |
|---|---|---|
| Cost per sq ft | $3–$8 | $5–$25 |
| Material | Cement-based slurry | Expanding polyurethane foam |
| Cure time | ~24 hours | 15–30 minutes |
| Typical lifespan | 5–10 years | Longer — waterproof, won't wash out |
| Weight added | Heavy — loads weak soils | Lightweight — ideal for soft ground |
| Drill holes | 1–2 inches | ~5/8 inch |
| Cold-weather install | Temperature-sensitive | Works in winter |
| Best for | Budget-first, large areas | Small–medium jobs, clay soil, fast turnaround |
Foam generally lasts longer — it's waterproof and lightweight, so it resists the erosion and soil-loading that eventually undo mudjacking. Mudjacking typically holds 5–10 years; foam often goes well beyond that.
On small-to-medium jobs, often yes — the total difference may be a few hundred dollars for same-day use, smaller holes, and better longevity. On very large areas, mudjacking's lower per-foot cost usually wins.
Foam has the edge: it adds almost no weight to soils that are already weak, and it won't wash out during snowmelt season. In areas with known expansive clay, most specialists recommend foam.
Foam, yes — it installs fine in cold weather. Mudjacking slurry is temperature-sensitive and usually waits for warmer days. If your slab needs attention in November–February, foam is the practical option.
Tell us what's sinking and we'll respond with a written, itemized estimate — usually within one business day.