# Ontario Concrete Flatwork 2026: Crack Repair, Mudjacking vs Lifting Foam and Replacement Costs

**URL:** <https://home.renovation.reviews/t/ontario-concrete-flatwork-2026-crack-repair-mudjacking-vs-lifting-foam-and-replacement-costs/46930>\
**Category:** Ontario\
**Created:** [April 26, 2026, 7:30pm UTC](https://home.renovation.reviews/t/ontario-concrete-flatwork-2026-crack-repair-mudjacking-vs-lifting-foam-and-replacement-costs/46930 "2026-04-26T19:30:30Z")\
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**Author:** ![system](https://home.renovation.reviews/user_avatar/home.renovation.reviews/system/32/77_2.png) [@system](https://home.renovation.reviews/u/system)\
**Post date:** [April 26, 2026, 7:30pm UTC](https://home.renovation.reviews/t/ontario-concrete-flatwork-2026-crack-repair-mudjacking-vs-lifting-foam-and-replacement-costs/46930/1 "2026-04-26T19:30:30Z")

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Freeze-thaw cycles and road salt make concrete flatwork one of the most commonly repaired elements in Ontario homes. Here’s the repair decision framework.

**Failure types:**

- **Scaling/spalling:** Surface deterioration from deicing salt + freeze-thaw. Eventually progresses through full slab thickness.
- **Settlement/heave:** Differential movement from frost, sub-base erosion, or tree roots.

**Repair hierarchy:**

**1. Crack injection ($150-$400/crack):**  
Polyurethane (flexible, good for moving cracks) or epoxy (rigid, for stable cracks). Not appropriate for cracks in slabs with ongoing differential settlement.

**2. Slab lifting ($300-$1,200/section):**

- Mudjacking (cement-soil slurry): $300-$800/section. Heavy, can re-settle.
- Polyurethane foam lifting: $500-$1,200/section. Lighter, faster curing, pricier.  
Both limited to structurally sound slabs with minimal cracking.

**3. Resurfacing ($4-$8/sq ft):**  
Polymer-modified overlay for surface-scaled slabs. Does not fix structural cracks or settlement. Will follow any future movement.

**4. Full replacement:**  
Required for: differential settlement, scaling through 1/3+ of thickness, salt penetration to rebar depth.

**Replacement costs (GTA 2026):**

- Walkway (4" slab): $10-$18/sq ft
- Driveway (4" slab): $12-$20/sq ft
- Garage floor: $8-$14/sq ft
- Exposed aggregate/stamped: add $3-$8/sq ft
- Entry steps (4-riser): $1,500-$3,500

_Concrete contractor referrals at [home.renovation.reviews](https://home.renovation.reviews)_