Polyjacking, simply put, is using a polyurethane foam instead of the cement and water mixture used in mudjacking in order to jack up or lift concrete that has been sunk, cracked or broken. There are many benefits to using polyjacking compared to its not so distant relative mudjacking.
In order to raise a concrete slab that has sunk or cracked do to the settling of the soil underneath the slab, you have two three choices. You can replace it, which is the most costly. Or you can raise it or lift the concrete slab back to level with one of the other two choices. The only two ways of doing this is either by using the mudjacking method or the polyjacking method. We’re not going to go over the difference between the two on this page, you can visit our FAQ page on it here if you’d like.
On this page, we will take a deep dive into Polyjacking and polyjacking alone.
What Is It?
Polyurethane foam is a generic term used for any mixture of foam that is created with polyol and diisocyanate. The foam for raising concrete is a mixture made up of recycled materials that looks like a foam. It will not break down, leach into the environment, or dissolve, so it’s an excellent material to use in lifting a cracked concrete slab. It only weighs 1 to 2 pounds per cubic foot so it is lightweight. Since it is made from synthetic materials, it is 96% hydrophobic which means that it repels water. You want a mixture that repels water because it may have been water that got you into your current mess as it is.
You see, moisture is usually the enemy number one when it comes to anything regarding your foundation, concrete, or really any area of your home. Once moisture gets into an area, it tends to do damage. And there is no exception with your concrete slabs. Moisture under your concrete surfaces can cause erosion of the soil. It can also make the slab settle in one area versus another. This can cause sinking or cracking which then requires your immediate attention.