FAQ…How to Spot Early Signs of Concrete Sinking (Before It Gets Worse)

1. What are the first signs of concrete sinking?

The first signs of concrete sinking include small gaps between the slab and your home, new cracks, water pooling, uneven slab joints, or soil pulling away from the edges. These changes show that the soil beneath the concrete is settling or washing out.

2. Why does concrete sink in Minnesota?

Concrete sinks in Minnesota because of freeze–thaw cycles, clay-heavy soils, improper drainage, and water washout from rain or snowmelt. These conditions create voids beneath sidewalks, driveways, patios, and garage slabs.

3. Is it cheaper to level concrete or replace it?

Leveling concrete with polyurethane foam is almost always cheaper than replacement—typically costing 50–70% less. It also requires no tear-out and can be walked on within minutes.

4. How do I know if my driveway or sidewalk needs leveling?

You likely need leveling if slabs are uneven, water is pooling, doors are sticking, cracks are widening, or trip hazards are starting to form. A professional inspection can confirm whether leveling or replacement is the best option.

5. Can concrete leveling be done in Minnesota winters?

Concrete leveling is typically done from spring through fall, when temperatures allow polyurethane to cure properly. However, winter inspections are still available to prepare for early-season scheduling.

6. What causes sidewalk trip hazards in Minneapolis suburbs?

Trip hazards usually form when soil shifts, tree roots grow, or moisture freezes beneath slabs. Areas like Lakeville, Apple Valley, Bloomington, and Maple Grove see frequent sidewalk settlement due to clay soils and freeze–thaw cycles.