Is Slab Jacking the Same As Mudjacking?

Is Slab Jacking the Same As Mudjacking?

Your driveway, sidewalk, patio, and front porch give guests and potential buyers an important first impression. If the concrete slabs around your home have begun to sink and have potentially hazardous and unsightly cracks, it could bring down the value of your home. The easiest way to restore your home's curb appeal is to lift and level your uneven concrete surfaces and return them concrete to their original state. Mudjacking is the more traditional solution for raising sunken and settled concrete. Slab jacking is a newer, more innovative way to lift and level sunken concrete slabs. Some people wonder, is slab jacking the same as mudjacking? The two methods do have similarities, but they are not the same. To learn the difference and which one is better, read on!

Why Does Concrete Need To Be Levelled?

Before we talk about the differences between mudjacking and slab jacking, let's understand why concrete slabs sink and settle in the first place. Concrete is a solid and durable construction material, but it can only be as stable as the soil below the slab. With time, soil can compact or wash away due to environmental factors, including rain and drought, or poorly compacted backfill from when the concrete slab was initially poured. When the soil beneath your concrete slab compacts or washes out, it will leave voids that a heavy concrete slab will sink into. The voids must be filled to provide ongoing support to raise sunken concrete slabs back into place. To fill these voids, homeowners need to choose a method to fix the issue, mudjacking or slab jacking with polyurethane foam.

Mudjacking is the traditional method of lifting and levelling sunken concrete slabs. Using the mudjacking method to raise sunken concrete slabs may seem like a common-sense approach, but it has disadvantages. Mudjacking uses a slurry made of cement, sand and clay or soil. Because of what the mudjacking slurry is made of, it has the potential to break down, and the slab will sink again over time. Mudjacking is also an invasive process. The holes used to inject the slurry are much larger than the holes used in slab jacking, and the process uses more equipment and takes longer to complete and cure. Mudjacking does have its benefits, but it is not a permanent solution to lifting and levelling sunken concrete slabs.

Slab jacking is very similar to mudjacking, but the process uses polyurethane foam to lift the sunken slab instead of a slurry. Polyurethane foam is a lightweight expanding foam that is pumped beneath sunken concrete slabs and lifts them back into their original position. A few small holes are drilled into the slab, and the polyurethane foam is pumped into the void below, expanding to lift the slab back into its original position. No heavy equipment is required for this process, and the foam cures in minutes, allowing you to use the area almost immediately after the work is complete. Once the polyurethane foam is cured, it becomes water-resistant, so it will not break down over time. Polyurethane foam is also manufactured with no toxic chemicals, so there is no worry of ground pollution around the area. Raising sunken concrete slabs with polyurethane foam is a solid and permanent solution. The quick and efficient process makes slab jacking superior to mudjacking. 

Choosing the technique that best suits your needs is an important decision. Weighing the pros and cons of both methods is essential before deciding which is best for you. While both methods have their advantages, slab jacking is a more permanent solution, and in our opinion, slab jacking is the better of the two methods. At Trademark Concrete Lift & Levelling, we specialize in slab jacking with polyurethane foam. If you have concrete slabs that need lifting, contact us, and we'll get you lifted!