Many of our customers have either had concrete lifted by mudjacking or they are getting quotes from mudjacking companies alongside Jackcrete. Many don’t even realize that what we do is a completely different process. While there are many similarities between mudjacking and polyurethane foam concrete lifting, understanding the differences can help to pick the right contractor.

Hole Size

Mudjacking holes are often between 1-3 inches in diameter, compared to foam lifting holes which are the size of a penny (about 5/8 of an inch). Because of this, poly foam holes can be filled with a color matching grout without any noticeable difference to the slab. Mudjacking holes, on the other hand, are significantly harder to hide and are often left as visibly different discoloration.

Material Composition and Weight

The mud mix used in mudjacking does not expand, instead relying on the hydraulic pressure of the pump to insert enough material to lift a slab. The weight is incredibly heavy, often being between 120-150 lbs. per cubic yard of material. Polyurethane foam, on the other hand, is often between 3-4lbs per cubic yard while being able to support greater loads.

 Which Method is More Reliable?

While we’re a bit of an impartial source, the fact is that polyurethane foam is a more reliable option. Concrete settles because of improper soil compaction. When extremely heavy weights are forced on top of the already compromised soil, the likelihood of further settlement of the same degree or worse increases. With polyurethane, the expansion of the foam compacts the soil around it ensuring that all cavities are adequately supported. Best of all, no added weight is added to the soil that could cause future problems.

Price

The price to raise a concrete slab using polyurethane foam or mudjacking are basically the same. Generally, both cost about 50% less than replacing a section of concrete. Mudjacking may be a bit cheaper, but usually by no more than 5-10%.

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