Mudjacking is technique used to solve problems associated with concrete settling. The technique is used to stabilize settling foundations and repair crumbling slabs, curbs and sidewalks. Mudjacking is also referred to as slab jacking, concrete raising, concrete lifting or slab leveling.
During mudjacking, workers drill 2-inch to 5-inch holes into the concrete, then pump in a mixture known as slurry. The slurry, which usually consists of water, dirt and cement, fills the voids and raises the slab to its original level. Once the surface is level, the drill holes are refilled with concrete.
The average cost of a residential mudjacking project is anywhere from $500 to $800, although it can be more or less depending on the condition of the foundation or surface.
- Less expensive - Mudjacking is significantly less expensive than polyurethane concrete raising, so it’s a good choice if you’re on a tight budget.
- Familiar process - A greater number of foundation repair companies are familiar with mudjacking because the process has been around so much longer.
- Shorter lifespan - Mudjacking won’t last as long because the fill materials will eventually lose density.
- Heavier - The fill is heavier, creating more of a burden on the soil.
- More noticeable - Because the fill material is heavier, more injection holes and larger holes are required. This is problematic when the repair work is being done on a visible surface, such as a concrete slab or sidewalk.
Polyurethane concrete raising is a newer method used to achieve the same goal of fixing problems associated with settling concrete. During the process, which is also known as foam lifting, polyurethane foam is injected underneath a slab to fill and raise it.
Until recently, polyurethane concrete raising was used strictly in public works applications, namely raising concrete streets and highways. But now the process is used for residential work, too.
In some cases, polyurethane concrete raising costs four or five times as much as mudjacking, largely because the materials are so much more expensive. You’re likely to spend $2,500 to $3,000.
- Lasts longer - Polyurethane concrete raising lasts much longer because the material never loses its density.
- Lightweight - The lightweight polyurethane fill creates less of a burden on the soil than mudjacking.
- Nearly invisible - Because the material is so lightweight, fewer and smaller injection holes are required, making it difficult to tell that repair work has been done.
- More expensive - Polyurethane concrete raising is significantly more expensive. If you’re on a tight budget, it’s probably not the best option.
- Newer process - Because the process has only recently been applied to residential applications, you may have a tough time finding a qualified professional in your area.
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