Why Polyurethane Foam Beats Mudjacking Every Time
For nearly a century, mudjacking has been a popular technique for lifting sunken concrete. But just because it’s been around for a long time doesn’t mean it’s the best solution. At Benchmark Concrete Raising, we believe in delivering lasting results—and that’s where polyurethane foam lifting outperforms traditional methods in every category.
In this post, we’ll break down why mudjacking falls short, especially in Minnesota’s unique climate, and why polyurethane foam is the smarter, longer-lasting investment for homeowners and businesses alike.
The Problem with Mudjacking
Mudjacking may sound like a straightforward fix, but it has serious limitations:
1. Heavy & Invasive
Mudjacking requires drilling large holes—at least 1 inch in diameter—into your already compromised concrete slabs. Through these holes, a wet slurry mixture is pumped to lift the concrete. This mixture is heavy—up to 150 lbs per cubic foot—which can actually worsen the problem by adding stress to unstable soil.
2. Poor Void Filling
The slurry mixture used in mudjacking doesn’t fully fill the voids beneath the slab. That leaves empty spaces where water can seep in, wash away the soil, and cause future settling.
3. Not Waterproof & Vulnerable to Freeze/Thaw Cycles
Mudjacking materials are not waterproof and don’t dry completely. In places like Minnesota, where freeze-thaw cycles are part of life, that moisture can freeze, expand, and cause heaving or cracking—restarting the sinking cycle all over again.
4. Temporary Fix
The slurry will eventually shrink and erode, especially if water drainage is poor or if cracks and joints aren’t properly sealed. The result? The same concrete you just paid to fix may need repairs again in a few short years.
Why Polyurethane Foam Lifting Is the Superior Solution
At Benchmark Concrete Raising, we specialize in polyurethane foam injection, a modern solution that solves the root problems of concrete settling—without introducing new ones.
1. Lightweight Yet Strong
Our polyurethane foam weighs just 3 lbs per cubic foot—a fraction of what mudjacking slurry weighs. This means minimal additional stress on your soil, while still offering powerful lifting strength.
2. Fast & Non-Invasive
We drill tiny ⅜″ holes, which are barely noticeable once patched. The foam expands rapidly, lifting the slab with precision and speed. In fact, it reaches full strength in just 15 minutes, so you can use your driveway, sidewalk, or patio the same day.
3. Waterproof & Weather-Resistant
Unlike mudjacking material, polyurethane is hydrophobic, meaning it repels water. It won’t absorb moisture, wash away, or freeze in cold conditions. That makes it ideal for Minnesota’s wet springs and frigid winters.
4. Environmentally Safe & Durable
Our foam is non-toxic, eco-friendly, and designed to last for decades. It not only lifts your concrete—it also compacts the surrounding soil, strengthening the base for long-term stability.
The Verdict
If you're looking for a long-term fix to sunken concrete, mudjacking is a patch—but polyurethane foam is a true solution.
With smaller holes, lighter material, quicker curing time, and far better resistance to moisture and cold, polyurethane lifting is the smart choice for homeowners and businesses across Minnesota.
Get a Free Estimate Today
Ready to raise your concrete the right way? Contact Benchmark Concrete Raising today for a free, no-pressure estimate. We’ll help you protect your investment, improve your curb appeal, and prevent future issues—without the mess or weight of mudjacking.
