Mudjacking uses a heavy slurry of sand and cement, while polyjacking uses a high-density, lightweight expanding foam. Polyurethane is generally preferred in Colorado because it is waterproof, doesn't add significant weight to volatile soils, and requires smaller injection holes (about the size of a penny).

Small holes are drilled into the sunken slab, and the foam is injected. As it expands, it fills voids and lifts the concrete back to its original position. The holes are then patched with a concrete-matching grout.

Yes. Most polyurethane foams used in the industry are eco-friendly, non-toxic, and won't leach chemicals into the surrounding Colorado soil.

One of the biggest perks: polyurethane cures in about 15 to 30 minutes. You can usually drive your car over the leveled area by the time the crew leaves your property.

While some indoor work can be done, most exterior leveling is paused when the ground is frozen. Frozen soil prevents the foam from spreading and lifting properly. Services typically resume once the ground thaws in the spring (late March or April).

Generally, yes. Leveling typically costs 50% to 70% less than tearing out and repouring a new slab. It also avoids the mess of heavy machinery and the days-long curing wait for new concrete.

Because the foam is waterproof and doesn't wash away like mudjacking slurry, the repair is designed to be permanent. However, if the underlying soil continues to shift due to Colorado’s bentonite clay, some minor movement may still occur over several years.

The holes are very small (5/8"). Once patched with matching grout, they are barely noticeable and blend in over time as the concrete weathers.

In Colorado, the most common causes are expansive clay soils, poor drainage that washes out subsoil, and "settling" in newer construction where the backfill wasn't properly compacted.