There’s nothing more sad than some sunken concrete…

There’s nothing more sad than some sunken concrete…

Polyurethane concrete raising and mudjacking are two ways to lift and support weak or sunken concrete slabs by creating holes and also pumping material underneath concrete slabs. Concrete slab.

Polyurethane VS Mudjacking


How it works

The polyurethane foam method uses the concrete slab to deliver poly foams to raise concrete to fill voids and help stabilize soils. The 5/8 ” hole is made through the slab and into the subgrade. A tapered delivery port is fitted in the 5/8 ” hole. The injection gun is attached to the port. The gun injects material called polyurethane material into the port and the slab. The expansion of the material takes place in a matter of seconds, compressing the soil and elevating concrete.


A precise, easy process

Raising concrete using polyurethane foam can be performed using incremental injections. The lifting foam will expand fully within a matter of minutes, which allows you to track the process of raising and avoid the slab from over-raising. We recommend using an air-purged gun to inject foam beneath the slab. This keeps the injection port open during injections, allowing the foam to expand fully before injecting the next foam material.

Concrete lifting before and after with HMI polyurethane

Injection Foam Gun: A Smart Upgrade

The Xtreme Basic Design.
PMC has spent years developing this concrete lifting equipment specially designed for concrete lifting.

  • Save thousands on spare parts- half as many rings as the Fusion Gun
  • Valve Operated by check valves.
  • Material Pressure Gauges- Monitor your pumping pressures while you do your job.
  • Air Pressure Gauges – Identify blocked ports before pumping!
  • Rolling handles that is easy to use can be moved between air off, air, and foam to switch on air or material flow.
  • You will spend more time pumping and less time making repairs and cleaning up your gear.

Find out more about the Xtreme gun here.

Polyurethane Foam Can Also Be Used for:

Void Filling The settling of concrete isn’t the only problem our foams resolve. Voids under slabs usually found in areas with excessive washout or settlement have been observed. The material is typically fifteen to 25 times the weight of conventional mud jacking or cementitious mix, which puts less strain on a subgrade that is already failing.

The filling voids are similar to concrete raising, which includes drilling, port installation, and injecting the material. Dual component polyurethane foams generate heat when they are installed. Void fills must be installed by layering to let heat dissipate without risk. We will distribute an instruction manual on Stewardship for all Dual Component polyurethane customers. This manual will cover security precautions for injecting dual-component polyurethane foams.

Joint/Slab Stabilization: A slab’s stabilization process is usually required when slabs are not supported. Support, however,, may or might not be stabilized. Slabs are prone to crack when loads that exceed their capacity are applied.

Stabilizing joints or slabs requires the spaces to be filled to stop movement and provide support. This foam is specially designed for joint/slab stabilization due to its long reaction time and limited expansion strength. It takes longer for it to expand, which allows for providing better coverage underneath the slab or in the joint.

Seawall Repair With every wave is washed away; water enters gaps and cracks in the wall. As cracks and voids begin forming in the wall, the wall joints could fail. Structural damage could be causing the problem, and a solid foundation could be in danger. It is possible to repair a seawall using HydroFOAM to fill in voids or stabilize loose soils and seal leaks for less than the cost of wall replacement. Rebuilding seawalls using HydroFOAM instead of cement or grout doesn’t increase the weight of soft soil and can last longer. Learn more here>More >

A quicker, more cost-effective choice

If you compare it to concrete replacement, when compared to raising concrete by using the aid of ArmorThane’s polyurethane foam will be cost-effective. It’s also significantly more efficient when compared with the replacement of concrete. Repairs are completed in minutes and can be used as intended. Polyurethane’s material procedure and cleaning simplicity have notable benefits over traditional mud jacking using grout.

ArmorThane Offers a Full Line of Complete Polyurethane Concrete Raising Systems…