Foam Lifting / Polyjacking
Uses expanding polyurethane foam. Often lighter, cleaner, and fast-setting, but may cost more depending on the project.
Foam Lifting vs Mudjacking
Both methods can lift settled concrete. The better choice usually depends on the slab, access, voids, budget, and what shape the concrete is in.
This guide is for homeowner planning and general education. Site conditions, slab access, and local contractor pricing can change project recommendations.
Method Comparison
Foam lifting and mudjacking do the same general job in different ways
Homeowners hear foam lifting, polyjacking, mudjacking, slab jacking, and concrete lifting, and the names can make a simple idea feel complicated.
Both foam lifting and mudjacking are ways to raise settled concrete without replacing the whole slab. They just use different material underneath.
Mudjacking usually uses a cement-based slurry or grout. Foam lifting uses expanding polyurethane foam.
Neither one is automatically best for every job. The slab, access, voids, water, budget, and concrete condition all matter.
Side by Side
Foam lifting vs mudjacking in plain English
One uses expanding foam. The other usually uses a heavier slurry or grout.
Foam can be lighter, cleaner, and quick to set. Mudjacking can be practical, familiar, and cost-effective. That does not mean foam is fancy magic or mudjacking is outdated junk.
A good contractor should explain why their method fits the actual slab, not just sell the method they like best.
Mudjacking / Slab Jacking
Uses a cement-based slurry or grout. Often practical and cost-effective when the slab is still in good enough shape.
Concrete Replacement
Still worth considering when the concrete is cracked up, crumbling, root-heaved, or not worth saving.
Foam Lifting
When foam lifting may be worth asking about
Foam lifting may be worth asking about when lighter material is helpful, smaller drill holes are preferred, faster set time matters, or access and cleanup are concerns.
It still depends on the slab being mostly intact. Foam does not turn broken or crumbling concrete into new concrete.
If a contractor recommends polyjacking, ask why foam fits that specific project.
Mudjacking
When mudjacking may be worth asking about
Mudjacking may make sense when the slab is still solid, a cost-effective option matters, and the contractor is experienced with slurry or grout lifting.
Driveways, sidewalks, patios, steps, and similar slabs can all be candidates if they settled rather than failed. Slab jacking is often used as a related term.
The extra weight of the material and the soil or base underneath still matter, so it is not a blind yes.
Cost
Which costs more, foam lifting or mudjacking?
Foam lifting often costs more, but the method is only one part of the quote.
Mudjacking is often the lower-cost method. Foam lifting may cost more because of material and equipment.
Cost also depends on slab size, amount of lift, voids, access, water issues, slab condition, and minimum trip or setup charges. The cheapest quote is not always best if it ignores why the slab sank.
The concrete leveling cost guide is a good place to compare the bigger factors.
- Material used
- Size of slab
- Amount of settlement
- Voids underneath
- Access
- Slab condition
- Drainage cause
- Replacement comparison
The Part People Miss
The cause matters more than the sales pitch
If water washed out the base, the water problem matters. If tree roots pushed the slab up, lifting may not solve it. If the slab is crumbling, neither foam nor mudjacking makes it new again.
This is where people get tripped up: the method is only part of the repair. A good contractor should explain why one method fits the actual slab and what could make the repair fail later.
If you are not sure whether the slab is a candidate, try the liftability quiz.
FAQs
Foam lifting vs mudjacking questions
Is foam lifting better than mudjacking?
Sometimes, but not always. Foam is lighter and can be cleaner, while mudjacking can be practical and cost-effective.
Is foam lifting more expensive?
Often, yes. Material, equipment, slab size, voids, and access all affect the quote.
Is mudjacking still a good option?
Yes, when the slab and project fit the method. It has been used for a long time for settled concrete.
Does foam lifting last longer?
It can in some situations, but the cause of settlement matters more than the method name.
Which method is better for driveways?
It depends on slab size, cracks, voids, water, access, and contractor recommendation.
Which method is better for sidewalks?
A simple settled panel may be handled either way. Root-heaved or broken panels may need another repair.
When should I replace instead?
Replacement may be better when the concrete is broken, crumbling, unstable, heaved, or not worth saving.
Request a quote
Not sure whether foam lifting or mudjacking fits your slab?
Tell us what is sinking, where you are located, and how soon you would like it looked at. A contractor serving your area can help compare the options. Photos can help once someone reviews it, but they are not required just to start.
Keep Comparing
Related Central Illinois pages
A few practical next pages if you are still sorting out what makes sense.
Can My Concrete Be Lifted?
Answer a few questions about the slab before requesting a quote.
Request Quote
Describe what is sinking and ask for someone serving your area.
Mudjacking vs Concrete Replacement
Compare lifting with tearing out and pouring new.
Concrete Crack Repair vs Leveling
Figure out whether a crack, settlement, or both are involved.
Why Concrete Sinks
Understand water, voids, base movement, roots, and age.
Concrete Leveling
Start with the broad idea of lifting and supporting settled concrete.
Mudjacking
Plain-English help for traditional slurry lifting.
Slab Jacking
Learn what slab jacking means and when it may fit.
Concrete Lifting
Understand concrete lifting for driveways, sidewalks, patios, and slabs.
Concrete Raising
Another common term for raising settled concrete.
Foam Concrete Lifting
See how polyurethane foam lifting compares.
Polyjacking
Learn the foam lifting method called polyjacking.
Sunken Driveway Repair
Options for driveway lips and uneven slabs.
Sidewalk Trip Hazard Repair
What to know about uneven sidewalk panels.
Sinking Patio Repair
Patio leveling options when slabs settle or hold water.
Concrete Steps Sinking
Porch step and stoop leveling questions.
Garage Floor Settling
Garage slab leveling and replacement considerations.
Springfield
Concrete leveling information for Springfield.
Bloomington-Normal
Concrete leveling information for Bloomington-Normal.
Decatur
Concrete leveling information for Decatur.
Champaign-Urbana
Concrete leveling information for Champaign-Urbana.
Peoria
Concrete leveling information for Peoria.
Next step
Need someone to look at your sunken concrete?
Tell us what is sinking, where you are located, and how soon you would like it looked at. Photos are helpful later, but they are not required to start.