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Polyjacking (also known as polyurethane concrete raising, polyurethane concrete leveling, and foam lifting) is the process of fixing sinking concrete, by injecting polyurethane foam into the void underneath the slab.

This sinking concrete repair method uses the slab itself as a means of delivering polyurethane material that raises concrete, fill voids, and stabilize soils.

The Process

A small hole is drilled through the slab into the subgrade. A tapered delivery port is installed into the hole. Raising concrete with polyurethane foam is done with incremental injections. Lifting foam will fully expand within 10-15 seconds allowing you to monitor the raising and preventing over raising the slab. The injection gun delivers the polyurethane material through the port and slab. Expansion of the material occurs within seconds, compressing loose soils and raising concrete.

PolyPier Poly-Foam Concrete Lifting

Polyjacking Overview

Residential and Commercial Applications

Repairing A Driveway

Polyjacking is more efficient, more economical, and faster to complete than other concrete raising methods. It is used in many applications including:

When compared to concrete replacement, the process of raising concrete with polyurethane foam is inexpensive. Polyjacking is also exponentially faster than replacing concrete.

Polyjacking vs. Traditional Mudjacking

Mudjacking uses a grout based material infused with mud and cement. It involves drilling a series of 1” or bigger holes in a slab of concrete so the material can be pumped under the settled slab. It is hydraulically pumped under the slab to fill in voids and raise the concrete back to level.

concrete raising before after

Polyjacking uses a polyurethane foam material that is injected beneath the concrete. Foam jacking drills a nearly invisible 5/8” holes, requiring fewer holes than traditional mudjacking. When polyurethane material and water is mixed, it expands and fills in the voids underneath the slab. The polyurethane material’s density always remains intact.

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Customer Testimonials

Average rating for Affordable Mudjacking Concrete Lifting is 5 stars of 5 stars - based on 19 reviews
Mudjacking in Kansas City, MO
Excellent work on all types of concrete! They repaired my driveway, patio, sidewalk, front step and air conditioner pad for a very affordable price.