Concrete Leveling & Mudjacking Calculator
Measure the sunken area and how far the slab has dropped to estimate the void under it, the slurry or foam to plan, a hole grid, and a starting installed cost. Prices adjust by state and can be edited.
Concrete Leveling & Mudjacking Calculator — ConcreteNear.com
| Void volume | 1.48 yd³ |
| Foam to plan (≈2 lb/ft³) | 92 lb |
| Injection holes (grid) | 15 |
Cost estimate U.S. average prices
| Polyurethane foam lift, installed 240 ft² × $12.00 | $2,880 |
| Estimated total | $2,880 |
- Foam is lighter than slurry and uses smaller ports — useful for interior slabs and where extra weight is a concern.
- This is a planning estimate. A contractor should inspect drainage, voids and the slab before quoting.
| Inputs | |
| Length of sunken area | 20 ft |
| Width of sunken area | 12 ft |
| Average settlement | 2 in |
| Method | Polyurethane foam lifting |
| Extra material for overfill & leakage | 15% |
| Typical hole spacing | 4 ft |
Planning estimate only — confirm with your supplier or contractor.
Prices used — edit any price to match your local quote
| Item | Unit price | Basis & source |
|---|---|---|
| Polyurethane foam lifting, installed per ft² | starting estimate Starting estimate for polyurethane foam slab lifting. Interior work, large voids and poor access cost more. |
How to use this calculator
- Measure the length and width of the area that has settled.
- Enter the average drop in inches (not only the worst corner).
- Pick foam lifting or mudjacking.
- Read the void, material and hole count, then compare the starting cost to a local quote.
Formulas
Area (ft²) = length × widthVoid (ft³) = area × average settlement (in) ÷ 12Void (yd³) = ft³ ÷ 27Holes ≈ ceil(length ÷ spacing) × ceil(width ÷ spacing)Foam weight ≈ void × 2 lb/ft³ × (1 + waste %)
Questions
Mudjacking or foam?
Mudjacking pumps a cement slurry under the slab through larger holes and is often economical on exterior slabs. Polyurethane foam uses smaller ports, adds little weight and is common on interior floors. A contractor should recommend the method after looking at the slab and drainage.
How much does concrete leveling cost?
It is usually bid by the square foot and varies with access, drop and method. The defaults here are starting estimates — replace them with a local quote.
When is leveling the wrong repair?
If the slab is badly cracked, the base has failed, or the drop is very large, replacement or foundation repair (piers, anchors) may be needed instead of lifting.
Sources & assumptions
Prices checked 2026-11-10. State pricing multiplies national figures by the U.S. Bureau of Economic Analysis regional price parities (goods for materials, services for labor and services). RPPs compare general consumer price levels (U.S. = 100). They are not construction-specific; we use RPP Goods for materials and RPP Services: Other (excludes rents) for labor and services.
Starting estimates No public price series was found for: Polyurethane foam lifting, installed; Mudjacking / slabjacking, installed. These defaults are editable placeholders — replace them with a local quote.
Results are planning estimates, not quotes or engineering advice. Codes, specifications and your supplier's numbers govern.
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