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Sinking Concrete Slab

If the concrete foundation slab in your home starts sinking, the house may be unstable. Learn about early warning signs and repair options.

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Concrete slab sinking outside of residential home.

Have you noticed any sinking concrete slabs around your home? They’re not just an eyesore—they reduce your property value and pose dangerous tripping hazards for children and seniors.

With Groundworks, Alberta homeowners can choose a reliable solution that addresses the root causes of the damage with our tailored, lasting sunken concrete repair. We’re here to make your home safer and restore—and potentially raise—its value by sorting out your sinking concrete slabs for good.

Find out more about how we lift and level your concrete with our unique PolyRenewal™ foam injection.

Find out about Concrete Lifting Solutions
Book your appointment today.

What Are Sinking Concrete Slabs?

A sinking concrete slab occurs when the soil beneath your concrete starts to erode or settle. Over time, this sinking happens gradually and unevenly, creating an uneven and unstable surface that’s susceptible to further damage.

Uneven concrete bulging from the ground.

Signs of a sinking slab include:

  • Cracks
  • Unevenness
  • Pitting, flaking, and staining

If left untreated, the damage will only get worse and siphon off your property value. If you see this happening to your concrete, call Groundworks today.

What Causes Sinking Concrete?

Sinking concrete has many possible causes. Determining the exact source of your concrete sinking issue can be a complicated process. Weather patterns, soil composition, and even plant types can vary across the Calgary-Edmonton corridor and beyond. Some factors to keep in mind include:

  • Settling soil
  • Heavy rain
  • Poor drainage
  • Tree roots
  • Seasonal cycles of freezing and thawing
  • Installation problems

To determine what’s causing your sinking concrete, you can schedule a free inspection with Groundworks. Our concrete repair experts can identify the root cause of the damage and find the best way to put a stop to it before it gets worse.

merge graphic for Polylevel and Basement Authority of Calgary

Can You Prevent Concrete Sinking Yourself?

Concrete sinking repair is best left to professionals. DIY solutions such as self-leveling concrete kits leave too much room for error. Improper mixing or uneven pouring can lead to costlier, more invasive repairs. Meanwhile, traditional concrete repair solutions like mudjacking have a number of downsides, ranging from the disruptive installation process to a failure to address the root cause of the damage.

With Groundworks, you get our PolyRenewal™ injection system, featuring a lightweight, eco-friendly polyurethane mixture designed to permanently stabilize concrete without making a mess and without the added weight of a heavy concrete slurry. By creating a strong, stable base of dense foam, PolyRenewal™ prevents further deterioration or sinking of the concrete slab. It’s the best choice for long-lasting concrete lifting.

How to Fix a Sinking Concrete Slab

Groundworks employs an innovative concrete lifting method called PolyRenewal™ to securely rehabilitate settled concrete steps. Here’s a look at how it works:

We have a specific, step-by-step process for repairing sinking concrete slabs. It’s effective, efficient, and intended to be minimally invasive:

  • Inspect your home to find the root cause of the issue
  • Inject PolyRenewal™ underneath your sinking concrete
  • Seal cracks and joints to prevent future damage
  • Ensure against future damage with annual maintenance appointments

Why Should You Address a Sinking Concrete Slab Problem Now?

Unaddressed issues with your home’s foundationdrivewaysidewalks, or porch can devalue your property. Here’s why you should fix a sinking concrete slab promptly:

  • The slab will keep sinking without stabilization.
  • Cracked slabs pose trip hazards, especially for people with mobility issues, children, and seniors.
  • Delaying fixes can damage your home’s structure.
  • Slab or foundation faults reduce curb appeal and property value.
  • Sinking slab foundations lead to water pooling, drainage issues, flooding, mold growth, and potential pest infestations.

Learn More About Our Comprehensive Concrete Lifting Solutions

Ground Works man is being welcomed at the door by happy homeowner

If you have a concrete slab on your property that is uneven, sinking, or settling, call Groundworks. We operate in Northern Alberta and have many years of experience helping homeowners. We offer tailored solutions for all kinds of concrete slab problems, including using our PolyRenewal™ foam injection system.

No matter how big or small your concrete slab problem is, we can help! Get a free inspection and estimate today with no obligation.

Sinking Concrete Slab FAQs

Concrete repair is absolutely worth considering, especially when your driveway, porch, pool deck, and steps are uneven or sinking. Utilizing PolyRenewal™ can provide a permanent solution and restore your home’s value.

We think so! Especially if you’re thinking of selling your home or have family members that might get injured from damaged concrete.

While it might be tempting to DIY, we strongly advise against it. At Groundworks, we provide precision-engineered systems for a permanent solution. As experts in concrete repair, we use the highest quality methods and materials to ensure a long-lasting fix.

Do you see any of these signs? Book an appointment now!

Disclaimer: “Concrete leveling” means the process by which cracked, uneven concrete is stabilized, and in most cases lifted, by means of PolyRenewal™ polyurethane foam. Groundworks does not guarantee that PolyRenewal™ can make any and/or every square inch of your concrete perfectly level.

Proudly Serving Alberta

Alberta trusts Groundworks for reliable crawl space, basement waterproofing, concrete lifting and foundation repair services. Contact us for a free inspection!  

Top Cities We Serve


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The work done promptly by Ryan and his team (Eryica, Ny) was excellent with the driveway lift that was extremely necessary. The team did a great job being on time and within the time allotted to complete the work. Would recommend to others if they need a professional job done while being efficient. Thank you again!

Andrew Mah

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We got 3 quotes for driveway lifting. These guys were competitively priced and had good reviews on google so we hired them. I’m glad we did! They were very friendly, professional, and efficient. They did a great job and cleaned up afterwards. When James and his partner came back to seal the joints, the service was just as good as the first team. Thanks again!

KB

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They showed up, gave me quote on the spot, I approved it they showed up next day and got it all done in 4 hrs. Evan zack and trevor were great to deal with during the install and gave me a walk thru when it was all done letting me know all the details of the job. Would recommend 👌

Cody Mathiesen

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Vincent Augert was very thorough and upfront about the cost and warranty.
He was very easy to deal with and most importantly, we never felt pressure during the whole quoting process.

Kevin Nguyen

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Excellent service. Sales was pleasant and quote was thorough enough to proceed. The crew that came out to excavate, and install the interior and exterior basement systems was absolutely top notch – their work was neat and tidy, they showed up on time, and worked hard. To top it off, they (and all the folks involved) have to be the most pleasant contractors I’ve ever dealt with – and this is house #5 for us over the years! Thank you, Basement Authority. Highly recommend.

Laura Chutny

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Fixed patio grade and sealed cracks in patio. The crew did a great job, thank you Q, Jag, Jon. They were polite, kindly explained what they did. Vince was great to work with too, he came out to give me a quote. Work was done on schedule, on day promised. Thank you.

Wynne Shapka

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Q, Jon and Rachel did an amazing job today, they raised our sidewalk that was sunken in the ground and now it looks so good! Good job team!

Mike Sanocki