Your Guide to Concrete Raising and Leveling

Everything Homeowners Need to Know About Polyjacking
Learn how polyjacking works to lift and level sunken concrete. Discover the benefits of polyurethane foam injection vs. mudjacking for sidewalks, patios, and driveways.

What Is Concrete Raising (Polyjacking)?

Concrete raising, also known as polyjacking or polyurethane concrete leveling, is a fast, non-invasive way to fix sunken concrete without replacing it. Instead of tearing out slabs, we inject expanding polyurethane foam underneath the concrete to lift and level it.

This method is ideal for:

  • Sunken sidewalks

  • Uneven patios

  • Settled driveways

  • Sloping steps

  • Garage aprons

Quick Answer (for voice assistants and featured snippets):
Polyjacking is a method of lifting sunken concrete by injecting expanding foam beneath the slab. It levels the surface, fills voids, and stabilizes the soil.

How Does Polyjacking Work?

Here’s how the polyurethane foam injection process works:

  1. Small holes (about the size of a dime) are drilled into the slab

  2. Liquid polyurethane is injected through those holes

  3. The foam expands, fills gaps, and lifts the concrete

  4. The foam hardens in minutes, stabilizing the area for long-term support

  5. The holes are patched, and the surface is ready for use — often within 30 minutes

Fast Fact: Polyjacking is mess-free and typically completed in a single visit.

Why Is Polyjacking Better Than Mudjacking?

Many homeowners ask: “What’s the difference between polyjacking and mudjacking?”

Here’s a side-by-side breakdown:

FeaturePolyjackingMudjackingHole sizeDime-sizedSilver dollar-sizedCure timeMinutesHours to daysMaterial weightLightweight foamHeavy cement slurryWater resistanceHydrophobicWater-based (can wash out)LongevityLong-lastingShorter lifespanSoil stabilizationYesLimited

Polyjacking wins on speed, aesthetics, durability, and long-term value.

Is Concrete Leveling Right for My Home?

Ask yourself these questions:

  • Is your concrete uneven but not broken?

  • Are you worried about trip hazards or water pooling?

  • Do you want a fast, cost-effective fix without a full replacement?

If you answered yes, concrete raising with polyurethane is likely your best option.

Why Homeowners Trust Benchmark Concrete Raising

We serve homeowners and businesses across the Minneapolis–St. Paul metro, including:

  • Mankato

  • Burnsville

  • Lakeville

  • Bloomington

  • Forest Lake

Fast, clean, and non-invasive
Clear quotes with no hidden costs

Friendly, local experts who stand behind their work

Get a Free Concrete Leveling Estimate Today

Don’t wait for things to get worse. Fix your concrete the smart way with Benchmark Concrete Raising.

Contact us now for a free quote — and get your sidewalks, patios, and steps back on solid ground.

FAQ: Concrete Polyjacking

Q: What is concrete polyjacking?
A: Polyjacking is a concrete repair method that uses expanding foam to lift and level sunken slabs.

Q: How long does it take?
A: Most jobs take 1–2 hours. The area is usually ready to use immediately.

Q: Is polyjacking safe for the environment?
A: Yes! The foam is inert, non-toxic, and eco-friendly.

Q: How much does polyjacking cost?
A: Every job is different, but it's typically 40–70% less than replacement. We provide free, no-pressure estimates.

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Garage Apron Sinking? Here’s How to Fix It Without Replacing Concrete