"We were very pleased with the job that Sam and Mike did on raising and stabilizing our pool pump house. Very professional and easy to talk with when voicing any concerns we had about the process. Having had such a good experience, we would most likely contact Adirondack Basement Systems if we have any further issues with sinking concrete. We rate them a 5+ for service and professionalism."
"The crew arrived on the planned date and worked diligently. They were knowledgeable about the issues of an old house and knew exactly what they were doing. They had to carry out the debris (concrete and dirt), and bring in the material and equipment by hand. They were careful to partition off the part of the basement where they worked and keep dust and dirt from going out of the work area. The crew did a great job in making sure the work sites were cleaned up and everything was done right. A truck had to come back 2 days later to finish up the river rock in the outside trench, as they had run out of material. The yard, considering how difficult it was to dig the trench away from the house, was in very good shape. There were tree roots ans shale that made things difficult and required a jackhammer at times. It was a difficult and messy job that they did wonderfully, inside and outside. I have been very pleased with the work and there has been no problems with water or excessive dampness in the basement."
"We cannot say enough good about Dylan, Seth and Tim. 3 very hard workers. Lifting heavy heavy loads of concrete and stone up my and down my cellar and porch steps. They never stopped for breaks. Great workers. Respectful and pleasant and knew their job requirements. Very careful with doors, floors etc It?s a messy job. ThankYou"
For years High Tech Construction Co. has been servicing its customers with efficiency, integrity, and Professionalism. Specializing in brownstone exterior restoration we strive to preserve historic brownstones from deterioration. Located in Brooklyn NY. Take tour of our website and gain insight into the core values and philosophies at High Tech Construction Co.
Concrete Mudjacking questions, answered by experts
There is no real alternative to underpinning, although mudjacking and polyjacking are other repair methods that can add support from underneath your foundation. Rather than placing supportive piers under your structure, these involve pumping a material under your slab to lift a sunken section back into its original position. Polyjacking, in particular, is sometimes a suitable solution for stabilization issues under slab foundations, but underpinning is often accepted as the best and most permanent solution.
Mudjacking typically takes 24 to 72 hours (one to three days) to dry and cure completely before you can resume normal use. The total drying time can vary depending on the size of the project. Because the slurry mixture contains cement, it needs to harden fully to prevent the concrete slab from shifting under added weight. You should avoid walking on the concrete or placing heavy items like furniture or vehicles on the surface until it has fully set. Your concrete contractor can provide a precise timeline. As a point of comparison, if you opt for polyjacking, the polyurethane foam can dry in minutes, but it's recommended to wait about an hour before use.
Yes, expanding foam (also known as polyurethane foam) can lift concrete. This approach, called polyjacking, involves injecting the foam rather than concrete slurry to fill voids and raise the concrete slab back into place. It’s often faster and requires smaller drill holes than traditional mudjacking, though it may come at a higher cost. Some contractors also prefer polyjacking over mudjacking for more damaged and delicate slabs.
The average cost for mudjacking is around $1,200, though prices can range from $300 to $3,400. On a per-square-foot basis, you can expect to pay between $3 and $8, with an average of about $5 per square foot. The final cost depends on several factors, including the square footage of the concrete, the type of slab, its accessibility, whether it is load-bearing, and the type of material used to lift it. Generally, lifting a driveway, small patio, or sidewalk is less expensive than lifting a slab foundation or garage floor.
Pros often use mudjacking or polyurethane foam injection to level a sunken concrete patio. Both methods lift the slab by filling voids beneath it. After properly compacting the soil beneath it to prevent future settling, the concrete may need to be removed and re-poured for severe sinking.
The Stamford, NY homeowners’ guide to concrete mudjacking services
From average costs to expert advice, get all the answers you need to get your job done.
DIY mudjacking is an advanced task, but learning how to raise a concrete slab is great to know for many scenarios. Let's take a look at how to DIY mudjack.
