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Mudjacking & Alternative Repairs for Sunken Concrete

repairing sunken concrete with polyurethane injections

When exterior slabs and stairs begin to sink, they can create unsightly, cracked, and uneven surfaces that are not just unattractive; they’re dangerous as well. Depressions and sunken slabs in your exterior patios, sidewalks, driveway, or external concrete stairs are not only tripping hazards, but they can also create wells for water and moisture to gather in, preventing efficient drainage in your yard.  

Innovative Basement Authority has many years of experience in addressing these issues; we have a range of solutions available to lift sunken concrete, stabilize the surface, and restore its appearance. 

In this article we will discuss what mudjacking is and why the new solutions we offer are a better option. 

What Is Mudjacking? 

To put it simply, mudjacking is a repair technique for lifting sunken concrete slabs back into place. This is done with a mortar-based mix of mud or “slurry” that requires plenty of time to set.

messy mudjacking installation

The Process

Mudjacking is an invasive solution that requires some excavation and drilling. The extent of drilling and excavation depends on the amount of damage and the number of damaged slabs requiring treatment. Generally speaking, the process will look like this: 

  • Drilling 

Mudjacking requires holes the size of soda cans to be drilled into affected slabs. If there is flooring on top it will have to be lifted or excavated first. These holes must be placed between two and four feet apart and the exact number and placement depend on the damage present. 

  • Mixing 

Once the insertion sites have been prepared, the slurry for mudjacking has to be properly prepared. The precise mixture can vary, but the key components are soil, sand, water, and limestone.  

  • Installation 

The prepared slurry is pumped hydraulically into the void below the affected concrete slabs. The slurry will fill this void, and the pressure will fill the void, but usually in a cone shape. This will only prevent the concrete slab or slabs from moving and may not do anything to raise or lift the concrete. 

  • Restoration 

It takes between 24 and 48 hours for the mudjacking mix to solidify enough to have weight placed upon it. Once the installation process has been completed, the drill sites will be filled and covered and your flooring restored. 

The Cons of Mudjacking 

If you are considering mudjacking as a possible solution to sinking, cracked, or damaged concrete slabs in and around your home, there are some negative aspects that you should be aware of, including: 

  • Not suitable for foundation repair 
  • May be too heavy for unstable soil 
  • Semi-permanent 
  • Invasive 
  • Heavy and difficult to install 
  • Doesn’t cover the entire concrete slab 
  • Can damage the concrete over time 
  • Expensive 
  • Does not promise the lifting of concrete 

Alternative Solutions

When it comes to concrete lifting solutions, mudjacking is not the best option. Here at Innovative Basement Authority, have a selection of products that will give you the best possible results.  

Concrete Lifting with PolyRenewal™

installing polyurethane injections for concrete lifting

The PolyRenewal™ system is an effective replacement for the traditional mudjacking method. This is because of its unique, two-part polyurethane foam which provides superior lift, durability, and water resistance at a fraction of the weight of traditional mudjacking. We recommend PolyRenewal™ instead of mudjacking because it is quicker, less invasive, and it provides a permanent solution. 

This foam cures much quicker than mudjacking, and reaches 90% of its rigidity within 30 minutes. While mudjacking takes up to 48 hours to set and concrete replacement can see you having to wait up to 28 weeks for it to be fully set. 

Foundation Repair with Foundation Piers 

Foundation piers are a far better solution to foundational problems like subsidence and settlement. After all, these issues are caused by the fundamental inability of the soil underneath a property to support the structure and provide a solid base. Subsidence is usually caused by soil saturation and displays itself as sinking, usually uneven. Settlement, by contrast, is most often caused by soil dehydration and sees certain sections of a property’s foundation cracking and sinking into chasms left by soil contraction. 

Different forms of foundation piers can be deployed to repair the structure of your property. Push piers are straight and rely on the weight of a property while helical piers are essentially screwed into the ground. We also install slab piers specifically for slab foundations that are settling and need support. 

Contact Innovative Basement Authority for Expert Concrete Lifting

If you have concerns about sunken concrete slabs in or around your home, don’t wait for them to turn into safety hazards. Contact our team at Innovative Basement Authority to learn more about how your property can benefit from our state-of-the-art PolyRenewal™ concrete lifting solution or foundation repairs.

Homeowners trust our years of experience and customized repairs, and we’re excited to help you, too. Reach out to us today to schedule a free inspection and repair quote with our expert team! 

Leah Leitow

Leah Leitow

Content Writer

Leah is a Content Writer for Groundworks with nearly ten years of experience working in the foundation repair industry. Her experience ranges from working with homeowners to find the right solution to training inspectors and staff. In her background as a Michigan journalist, she gained invaluable insight into people's lives throughout our state. Leah lives in metro Detroit with her husband and two sons.

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