If you’ve noticed uneven concrete surfaces around your home—like a sunken driveway, a lopsided patio, or an unlevel sidewalk—then you’ve likely considered repair options. One of the most common and cost-effective ways to fix sunken or uneven concrete slabs is mudjacking. This method restores the slab to its original position without the need for complete replacement.
In this article, we’ll cover everything you need to know about mud jacking: what it is, how the process works, the typical costs, frequently asked questions, and the pros and cons.
What is MudJacking?
Mudjacking, also known as slabjacking or concrete leveling, is a repair technique used to raise and level sunken concrete slabs. The process involves pumping a slurry mixture (usually made of water, soil, sand, and cement) beneath the concrete slab to lift it back to its original height.
This technique is popular for repairing a variety of surfaces, including:
- Driveways
- Sidewalks
- Patios
- Garage floors
- Basement floors
- Concrete steps
- Pool decks
It’s a non-invasive alternative to complete concrete replacement and can often be completed within a few hours.
How Does the Mud Jacking Process Work?
Here’s a step-by-step breakdown of the mud jacking process:
1. Assessment and Preparation
The process starts with a thorough inspection of the damaged or uneven area. A professional will assess the extent of the settlement and determine whether mud jacking is appropriate.
2. Drilling Holes
Small holes (about 1 to 2 inches in diameter) are drilled into the sunken concrete slab. These holes are strategically placed to allow for even lifting.
3. Pumping the Slurry Mixture
A hydraulic pump is used to inject the mud jacking mixture (a slurry of water, cement, and soil or sand) through the drilled holes. The pressure from the mixture lifts the concrete slab from below.
4. Leveling the Slab
As the slurry is pumped in, the slab begins to rise. The technician will monitor the elevation and ensure the slab is leveled evenly.
5. Sealing the Holes
Once the slab is raised and level, the drilled holes are filled with a patching compound that matches the existing concrete.
6. Clean-Up and Curing
After the holes are sealed, the area is cleaned, and the patch is left to cure. In most cases, the surface is ready for normal use within 24 hours.
Cost of Mud Jacking
The cost of mud jacking can vary based on several factors, including the size of the slab, the degree of settlement, local labor rates, and the complexity of the job.
Average Cost Range:
- Per square foot: $3 to $8
- Per job: $500 to $1,500
- Large-scale projects: Can go up to $2,500 or more
For example:
- A small sidewalk section may cost around $300 to $600
- A two-car garage floor might cost $1,000 to $2,000
- A driveway could range between $800 and $2,000
Mud jacking is often 30-50% cheaper than full concrete replacement, making it an economical choice for many homeowners.
Pros and Cons of Mud Jacking
✅ Pros
- Cost-effective – Much cheaper than tearing out and replacing concrete.
- Quick turnaround – Most jobs are completed in a few hours.
- Non-invasive – Minimal disturbance to landscaping or surrounding areas.
- Eco-friendly – Uses natural materials like soil, sand, and cement.
- Extends life – Can extend the lifespan of the concrete by several years.
- Restores functionality – Makes sidewalks, driveways, and other surfaces safe and usable again.
❌ Cons
- Not always permanent – May need to be redone after several years, especially in poor soil conditions.
- Limited to certain slabs – Not ideal for severely cracked or broken slabs.
- Large holes – The access holes are more visible compared to foam jacking.
- Heavy fill material – The added weight of the slurry can cause additional settling over time.
FAQs About Mud Jacking
1. How long does mud jacking last?
Mud jacking results can last anywhere from 5 to 10 years or more, depending on the soil condition, weather, and how well the slab is maintained.
2. Can I do mud jacking myself?
It’s not recommended. Mud jacking requires specialized equipment and expertise to properly level the slab and avoid further damage. Always hire a professional contractor.
3. How soon can I use the concrete after mud jacking?
Most surfaces can be used within a few hours after the procedure. However, it’s best to wait 24 hours before placing heavy objects or driving vehicles over it.
4. Is mud jacking safe for my home foundation?
Yes, when done correctly, mud jacking is safe. It’s commonly used for stabilizing concrete foundations, garage floors, and basements. However, it should be avoided if the underlying issue is structural or if the slab is badly damaged.
5. Can mud jacking fix cracks in concrete?
While mud jacking can lift and level the slab, it won’t repair surface cracks. Cracks should be filled or patched after the leveling is complete.
6. What causes concrete to sink in the first place?
Common causes include:
- Poor soil compaction during installation
- Erosion from water runoff or plumbing leaks
- Tree roots disrupting the soil
- Freeze-thaw cycles
- Settling over time
Is Mud Jacking Right for You?
Mud jacking is an excellent solution for homeowners dealing with uneven or sunken concrete surfaces. It’s fast, affordable, and less invasive than full slab replacement. However, it’s important to consult a concrete repair specialist to assess the condition of your slab and determine if mud jacking is the right approach—or if another solution like polyurethane foam injection or slab replacement is needed.
Final Thoughts
Mud jacking remains one of the most practical and economical methods for repairing sunken concrete. It can restore safety, prevent trip hazards, and improve your property’s curb appeal—all without the high cost or disruption of total replacement.
If you’re dealing with a sinking sidewalk, uneven driveway, or sagging patio, don’t ignore the issue. Address it early with a trusted mud jacking professional and get your surface level, safe, and looking great again.
