Concrete Lifting St. Helena, CA

Concrete Lifting St. Helena, CA

Struggling with an uneven concrete slab in St. Helena, CA? If so, you’re in the right place. Whether it’s a sunken sidewalk, driveway, pool deck, or some other type of concrete slab, we can lift and level it using polyurethane foam injection, also known as “slabjacking”. Most jobs take no more than a few hours.

We’re Bay Area Underpinning and for the past 15 years (since 2005) we’ve been lifting and leveling concrete slabs in St. Helena. Short on time? Scroll down and check out our customer reviews at the bottom of this page.

Sunken Concrete is Both a Safety Hazard And a Liability

Don’t wait until someone trips, gets injured, and sues you. Fixing your uneven concrete slab using polyurethane foam injection usually only takes a few hours.

We are able to level sunken or settled concrete slabs in St. Helena, CA including, but not limited to…

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Concrete sidewalks and other types of walkways

Concrete sidewalks and other types of walkways

concrete driveway

Concrete driveways

concrete floor

Interior concrete floor slabs

Concrete pool decks

Concrete pool decks

Concrete patios

Concrete patios

Benefits of Concrete Lifting via Polyurethane Foam Injection

The benefits of concrete lifting – also known as slabjacking or polyurethane foam injection – are many, including:

  • It’s a solution that lasts. Polyurethane foam is ultra lightweight and won’t burden the soil with additional weight. Mudjacking, an older way of lifting sunken concrete, uses a heavy cement slurry to lift the slab. If the soil was already struggling to hold up the slab, the mudjacking slurry – which adds even more weight to the soil – could cause it to sink even deeper. If that happens, you’ll be looking at another repair.
  • It’s a cost-effective solution. Concrete lifting via polyurethane foam injection is easy on the pocketbook. It’s less expensive than digging up and replacing the slab.
  • Most repairs can be completed in a few hours. Most lifting jobs using polyurethane foam injection take only a few hours, and after the repair is complete you can immediately begin using the slab again.
  • Polyurethane foam won’t harm the environment. Polyurethane foam is an environmentally-friendly solution that won’t release harmful chemicals into the soil.
  • Level concrete just looks good! Sunken, uneven concrete is an eyesore.

What Causes Concrete Slabs to Sink or Become Uneven?

Concrete slabs can become unlevel for a variety of reasons including…

Drainage problems. If there’s too much water in the soil under the slab this can lead to erosion and voids.

Weak soil. Some types of soil are incapable of supporting a heavy concrete slab.

Expansive soil. Expansive soils are those that expand as they soak up moisture, and then shrink as they release it and dry out. This is usually a seasonal thing and can, over time, cause a slab to become uneven.

Invasive tree roots. You can probably guess how this happens. The roots push against the slab and cause sections of it to become uneven.

cracked concrete slab

What are the Different Ways to Lift a Concrete Slab?

Sunken, uneven concrete slabs were traditionally fixed via either digging up and replacing the slab, or via a repair method known as “mudjacking”. However, both these solutions have their drawbacks. That’s why, today, most unlevel slabs are corrected using polyurethane foam injection.

Before concrete slab lifting BAU - concrete slab lifting after


During mudjacking, the repair technician injects a cement slurry under the slab in order to lift it. The problem is the weight of the slurry. It’s heavy because it contains soil, water, and cement. If the slab sunk because the soil couldn’t support it – a common problem – mudjacking certainly isn’t going to help since it adds even more weight to the soil.

Concrete Replacement

When you replace an uneven slab, you dig it up and pour a new one. This used to be a common solution. However, it’s an expensive and time-consuming fix. Freshly-poured concrete can’t be used right away because it takes time to harden and dry. Also, if the soil was struggling to hold up the old slab, it’s not going to be able to hold up the new one either.

Whatever you do, don’t pour new concrete on top of a sunken slab to even it out. This just adds even more weight to soil that’s probably already having trouble supporting the slab.

Polyurethane Foam Injection

Polyurethane foam injection (also known as ‘’slabjacking’’) is a fast, minimally-invasive method for lifting an uneven concrete slab. It involves drilling a few small holes in the slab (they’re filled in later) and then injecting the rapidly expanding foam. Most jobs take no more than a few hours and then you can immediately begin using the slab again.

Concrete Lifting Services In St. Helena, CA

We’ve been repairing foundations and concrete slabs in St. Helena, CA since 2005. Our mission is to make sure lifting your concrete slab is a stress-free event that provides a cost-effective, permanent fix.

For a free concrete lifting inspection and repair estimate, fill out the contact form at the top of the page.


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