Mudjacking vs Foam Jacking

Two Methods for Lifting Concrete

When your concrete sinks, there are two main methods for lifting it back to level: traditional mudjacking and modern polyurethane foam jacking. Both accomplish the same goal, but the materials, process, and results differ significantly.

Mudjacking (also called slab jacking) pumps a heavy slurry of cement, soil, sand, and water beneath the sunken slab through 1-2" holes. This method has been used for decades and is still offered by some contractors.

Foam jacking (also called poly jacking) injects high-density polyurethane foam through small 5/8" holes. The foam expands to fill voids and lift the concrete. This is the modern, preferred method used by Wasatch Concrete Lifting.

Side-by-Side Comparison

Feature	Mudjacking	Foam Jacking
Material Weight	100+ lbs/cu ft	2-4 lbs/cu ft
Hole Size	1-2 inches	5/8 inch
Cure Time	24-48 hours	15-20 minutes
Waterproof	No	Yes
Longevity	May erode over time	Permanent
Precision	Moderate	High
Mess Factor	Can be messy	Clean process
Re-settling Risk	Higher (heavy material)	Very low

Why We Choose Foam

At Wasatch Concrete Lifting, we exclusively use polyurethane foam because it delivers superior results for our Utah customers:

• Utah's freeze-thaw cycles - Mud slurry absorbs water that freezes and expands, causing it to break down. Polyurethane foam is waterproof and unaffected by freeze-thaw.


• Lighter is better - The heavy weight of mud slurry can actually cause additional settling, especially on already compromised soil. Foam adds virtually no weight.


• Faster for you - You can drive on your concrete in 15 minutes vs. waiting 1-2 days with mudjacking.


• Smaller holes - 5/8" holes are much less noticeable than 1-2" mudjacking holes after patching.

Ready to lift your concrete the right way? Call (801) 230-9798 for a free estimate.