Polyjacking verses Mudjacking

Polyurethane concrete raising drills a nearly invisible 5/8" hole and the process calls for considerably fewer holes than traditional mudjacking.

Mudjacking involves drilling a series of 1 1/2" inch holes in a slab of concrete, so the material can be pumped under the settled slab. Some mudjacking companies drill even bigger holes, up to 2 inches.

Concrete Raising uses a foam material that is injected under the slab. When the components of this material are mixed, a reaction causes the material to expand. This expanded foam fills any voids beneath the slab and raises concrete. This material will never lose density, is permanent and weighs only about 2 pounds per cubic foot.

Uses a sand-based material that is infused with Portland cement. This slurry is hydraulically pumped under the slab to fill voids and raise the concrete. Mudjacking material weighs on average 100 pounds per cubic foot.

The material is also waterproof and has a great density so it does not wash out like the mudjacking mixture. Also, the mixture is environmentally friendly so it will not react underground with unstable soil.

After time, the mixture may be eroded out from under the slab which leads back to the original problem.