Start With the Problem, Not the Contractor

Most homeowners start looking for a concrete contractor the moment something looks wrong — a driveway slab that has dropped at the garage, a sidewalk with a trip-hazard lip, a patio that holds water after every rain. The natural instinct is to call someone right away and ask for a price.

That’s a reasonable first step, but you’ll get far more out of every conversation if you spend a little time understanding the problem first. Different contractors approach the same slab in very different ways. Some only pour new concrete. Some only lift and level. A few do both. If you don’t know what you’re trying to solve, it’s easy to end up with a quote for work you don’t need.

This guide walks through what to clarify before you call, how to compare your concrete repair options, the questions worth asking about process and results, and how to tell whether leveling is the right fit for your project.

What to Clarify About the Concrete Work Needed

Before you request estimates, take a walk around the affected area and note a few things. You don’t need to diagnose the issue yourself — that’s the contractor’s job — but having clear observations makes it much easier to compare what different contractors tell you.

Is the Concrete Sunken, Damaged, or Both?

This is the single most important distinction. Settled concrete has moved down or tilted, but the slab itself is mostly intact. Damaged concrete is crumbling, flaking, heavily cracked, or broken into multiple pieces. Many slabs show a little of both.

Settlement is usually a soil problem, not a concrete problem. Soil beneath the slab washes out, compacts, or shifts with freeze-thaw cycles, leaving voids that the concrete sinks into. If the slab is still in one piece, it can often be lifted back into place. If it’s badly deteriorated, replacement may be the better answer. Our guide to signs your concrete needs leveling covers the common symptoms in more detail.

What Is the Problem Causing?

Write down the practical effects you’re noticing:

  • Water draining toward the house or pooling against the foundation
  • Trip hazards at joints or where a walkway meets a step
  • A gap opening between a stoop and the house
  • A garage floor dropping away from the walls or apron
  • Cracks that seem to be widening over time

These details help a contractor understand urgency and scope. A drainage issue near the foundation, for example, is usually worth addressing sooner rather than later.

How Long Has It Been Changing?

If you can, note when you first noticed the problem and whether it seems to be getting worse. Settlement tends to be progressive — the conditions that caused the initial drop usually keep working. Seasonal changes, especially in Minnesota, can accelerate movement. If you’re curious about why, we’ve written about how freeze-thaw cycles cause concrete settling.

What Outcome Do You Want?

Are you primarily trying to eliminate a safety hazard? Fix drainage? Improve curb appeal before selling? Keep costs down? Knowing your priorities helps you evaluate whether a contractor’s recommendation actually matches what you need.

How to Compare Repair and Replacement Approaches

Once you understand the problem, you can look at your concrete repair options with a clearer eye. For settled slabs, the choices generally fall into three categories.

Full Replacement

Tearing out the old concrete and pouring new slabs is the most familiar option. It’s the right call when the existing concrete is badly cracked, spalling, or crumbling. The downsides are cost, time, and disruption: demolition, hauling, forming, pouring, and then a waiting period before the new surface can handle traffic. It also doesn’t automatically fix the soil conditions that caused the original settlement unless the base is properly addressed.

Mudjacking

Mudjacking pumps a cement-based slurry beneath the slab to raise it. It has been used for decades and can work, but the material is heavy, requires larger injection holes, and can wash out or settle over time. If a contractor proposes mudjacking, it’s worth understanding how it compares to newer methods — our article on mudjacking vs foam jacking breaks down the differences.

Polyurethane Foam Leveling

Polyjacking injects a high-density, closed-cell polyurethane foam beneath the slab through small drilled holes. The foam expands to fill voids, stabilizes the soil, and lifts the concrete back into position. It’s lightweight, waterproof, and cures quickly, so the surface is typically usable the same day.

Comparing the Options Fairly

When you have quotes for different approaches, compare more than the bottom line:

  • Total cost — Replacement often costs considerably more once demolition and disposal are included. See our breakdown of how much concrete leveling costs for context.
  • Downtime — How long until you can use the driveway, walkway, or patio again?
  • Root cause — Does the approach address the soil voids that caused the settling, or just the visible surface?
  • Longevity — What does the contractor expect the repair to do over the long term, and will they put that in writing?
  • Appearance — Lifting keeps your existing concrete, so color stays consistent. Replacing one section can leave a visible mismatch with the surrounding slabs.

A good concrete contractor will walk you through these trade-offs honestly, including the cases where their preferred method isn’t the best fit.

Questions About Process, Disruption, and Results

The estimate visit is your chance to learn how a contractor works. Their answers — and how clearly they give them — tell you a lot. Here are the questions worth asking.

About the Assessment

  • What do you think is causing the settlement? A knowledgeable contractor should be able to explain the likely cause, not just describe the symptom.
  • Is this slab a good candidate for your method? Listen for honesty. If a slab is too damaged to lift, you want to hear that now.
  • Is there anything you’d recommend I not repair? Contractors who are willing to talk you out of unnecessary work are usually the ones worth trusting.

About the Process

  • What material will you use, and why? For foam leveling, ask about the foam’s density and how it performs under load and moisture.
  • How many holes will you drill, and how large are they? Smaller holes mean a cleaner finished look.
  • How do you control the lift? Experienced crews monitor slabs carefully as they raise them to avoid over-lifting or creating new cracks.
  • What happens to the joints and cracks afterward? Ask whether sealing joints is part of the job or a separate option, since open joints let water back under the slab.

About Disruption

  • How long will the work take? Leveling a typical residential slab is usually a matter of hours, while replacement can stretch over days.
  • When can I walk or drive on it? This matters if you rely on the driveway daily.
  • What do I need to move or prepare? Vehicles, planters, furniture, and access to the work area.
  • How will you protect the surrounding lawn and landscaping? Replacement in particular can involve heavy equipment.

About Results and Accountability

  • What does a successful result look like? Ask how close to level they expect to get and what limitations might apply.
  • What warranty do you offer, and what does it cover? Get it in writing.
  • Are you insured? Any contractor working on your property should carry liability insurance and meet local licensing requirements.
  • Will I get a written estimate that spells out the scope? Vague estimates make it hard to compare bids and easy for misunderstandings to happen.

Be cautious of contractors who quote without seeing the concrete, pressure you to sign on the spot, or can’t explain their process in plain terms.

How to Assess Whether Leveling Fits the Project

Hiring a concrete leveling contractor makes sense in many situations — but not all of them. Here’s a practical way to think about fit.

Leveling Is Often a Strong Fit When:

  • The slab is sunken or tilted but still largely intact
  • Cracks are limited and the pieces are large enough to lift as units
  • You want to avoid the cost and disruption of tearing out concrete
  • The settlement is causing drainage problems or trip hazards
  • You want to keep the existing concrete so it matches the rest of your flatwork
  • You need the area back in use quickly

Replacement May Be Better When:

  • The surface is crumbling, heavily spalled, or breaking apart
  • The slab has broken into many small pieces
  • Reinforcement is exposed or badly corroded
  • You’re planning a significant redesign, such as widening a driveway or changing a patio’s layout

When It’s a Mix

Many properties fall somewhere in between. A driveway might have a few sections that lift well and one that’s too far gone. In those cases, a thoughtful contractor may recommend leveling most of the slabs and replacing only the damaged one. That approach often delivers most of the benefit at a fraction of the cost of a full tear-out.

The key is getting an assessment from someone who will look at each slab on its own merits rather than defaulting to a single answer for everything.

Choosing a Contractor You Can Trust

The right concrete contractor does more than complete the work. They help you understand the problem, lay out your options clearly, and recommend the approach that actually fits your property and priorities. Taking a little time to clarify what you need and asking the right questions will make it much easier to tell the difference.

At Inline Concrete, we specialize in polyurethane foam leveling for homeowners throughout the Minneapolis-St. Paul metro. We’ll look at your concrete in person, explain what’s causing the problem, and tell you honestly whether lifting is the right solution — or whether a section is better off replaced. If you have settled concrete and want a straightforward assessment, contact us for a free estimate.