Patio Leveling & Repair
Sunken Patio? Lift It — Don't Replace It.
Benchmark Concrete Raising lifts and levels sunken concrete patios throughout Minneapolis, St. Paul, and the greater Twin Cities metro using polyurethane foam injection. No demolition. No mess. Most jobs completed in a few hours, and the patio is usable the same day. Free estimates across our entire service area.
Signs Your Patio Needs Leveling
What to Look For
An uneven patio is more than an eyesore. Sunken or shifted slabs create trip hazards, allow water to pool against your foundation, and get worse over time if left unaddressed. In most cases, the concrete itself is still in good condition. The problem is soil movement beneath the slab.
- Visible cracks that are widening or worsening over time indicate voids forming beneath the slab
- Water pooling on the patio surface after rain signals that the slope has shifted away from proper drainage grade
- Sections of the patio noticeably higher or lower than others are a clear sign of settlement beneath specific panels
If you're seeing any of these, the patio likely has voids beneath it. Polyjacking fills those voids and lifts the slab back to grade without tearing anything out.
How It Works
The Patio Leveling Process
Polyurethane foam injection lifts sunken patio slabs by injecting high-density foam beneath the concrete through small holes roughly the diameter of a dime. The foam expands, fills voids in the soil, and raises the slab back to its original level. The holes are patched. The patio is usable the same day.
- Detailed inspection to assess the patio's condition and identify optimal injection points
- Small, discreet holes drilled strategically into the affected slab areas
- Polyurethane foam injected beneath the concrete — the foam expands, fills voids, and gently lifts the slab to grade
- Holes neatly patched and blended to match the surrounding surface
The foam cures in about 15 minutes. Most patio leveling jobs are completed in a single visit.
Why Polyurethane
Better Than Mudjacking. A Fraction of Replacement Cost.
Traditional mudjacking uses a heavy slurry that absorbs moisture and can break down over time. Full replacement means demolition, haul-off, forming, pouring, and days of downtime. Polyurethane foam lifting is neither of those.
Moisture-Resistant
High-density polyurethane foam doesn't absorb water or erode. It holds through Minnesota's freeze-thaw cycles year after year without breaking down.
Minimal Disruption
No heavy equipment, no demolition, no debris to haul away. The injection holes are small and discreet, and the surrounding area is left intact.
Same-Day Use
The foam sets quickly. Your patio is usable the same day — no waiting for a new concrete pour to cure over days or weeks.
Significantly Less Expensive
Because the existing concrete is reused, polyjacking costs a fraction of full replacement. Patios are one of the surfaces where the savings are most significant given the surface area involved.
Common Questions
Patio Leveling: FAQ
Can a sunken concrete patio be leveled instead of replaced?
In most cases, yes. If the concrete is structurally intact, polyurethane foam injection lifts sunken slabs back to grade in a single visit at a fraction of replacement cost. We evaluate every job before committing. If replacement is the right call, we'll say so upfront.
Why is my patio sinking?
Almost always, it's a soil problem beneath the slab. The Twin Cities metro sits on clay-heavy soils that shift with moisture changes, and Minnesota's freeze-thaw cycle works soil out from under slabs every winter. Voids form beneath the concrete, and the slab settles into them. The concrete itself is often completely sound.
Is polyurethane leveling the same as mudjacking?
No. Mudjacking uses a heavy cement slurry that can absorb moisture and break down over time. Benchmark Concrete Raising uses high-density polyurethane foam, which is lighter, stronger, and moisture-resistant — making it better suited to Minnesota's climate and longer-lasting than traditional mudjacking.
How much does patio leveling cost?
Polyjacking typically costs significantly less than full replacement. Patios are one of the surfaces where the cost savings are most pronounced because of the larger areas involved. We provide free on-site estimates. Call 952-295-0500 or request a quote online.
Is the patio usable right away?
Yes. The polyurethane foam cures in about 15 minutes and the patio is usable the same day. No waiting for concrete to cure, no days of blocked access to your outdoor space.
Do you serve my area?
We serve Minneapolis, Eden Prairie, Minnetonka, Bloomington, Edina, Plymouth, Maple Grove, Woodbury, Cottage Grove, and communities throughout the Twin Cities metro. Call 952-295-0500 to confirm service to your address.
The Bottom Line
Don't Replace a Patio You Can Lift for a Fraction of the Cost
Minor patio issues become major expenses when they're left unaddressed. Polyjacking restores safety, improves drainage, and brings your outdoor living space back to level — in a single visit, with no demolition, and at significantly less than replacement cost.
We provide free estimates throughout the Twin Cities metro. Call 952-295-0500 or request a quote online to get started.
