Polyjacking vs. Mudjacking
First, let’s talk terminology. Polyjacking is a process of drilling holes into concrete and filling the empty pockets under with foam. The foam expands to raise the surfaces to the desired level and height. Sometimes we also call it polylifting or foamjacking, among other names. It’s all the same, but it does matter what type of polyurethane foam is used. Mudjacking or slabjacking, as the alternative, uses mud to fill the same holes. They are both processes of concrete raising.
Although mudjacking is still the more common choice in the industry, the use of polyurethane foam to repair concrete foundations and structures isn’t a new concept. In fact, the method has seen a steady rise in popularity despite its steep price differential. The price is close to an additional 40 percent of project costs, which is an understandable deterrent against its adoption.
When does polyjacking make sense?
Occasionally, we run into what we call “unsuitable fill.” That is concrete slabs poured over unstable soil which can be pressured by the gritty cement that is used in mudjacking. In that case, it is beneficial to turn to the lightweight support offered by polyurethane foam. Polyjacking also requires a significantly smaller injection site and provides a smoother finish that many contractors prefer.
Another major advantage is cure time, which takes just 20 minutes compared to the 72 hours traditionally allowed for mudjacking. The materials are also considered more available and consistent. Simply, load-bearing concrete repairs are one example of polyurethane foam being the preferred solution.
Mudjacking may be the more traditional solution, but you can see how there are times when polyjacking might be the preferred method, despite the costs.
The main reason mudjacking still holds the lead is that it provides a greater compression strength. That makes mudjacking the preferred solution for many garage floors and similar projects. Also, any large void fills are best handled with mudjacking.
Now it’s time for you to sit down with your newfound industry knowledge and look at projects around your house. If your driveway, garage, patio or foundation needs help, give Advanced Mudjacking KC a call. We will send a contractor out for a free on site estimate for your property. Whatever you choose comes with a 10 Year Warranty and more than 25 Years of expertise in the Kansas City Metro Area.