Driveway Concrete Leveling Series - 3. Polyurethane vs. Mudjacking

When it comes to concrete leveling, homeowners may wonder whether polyurethane or mudjacking is the better method. Both can lift and stabilize sunken slabs without having to demolish and replace the driveway. However, there are some key differences between these two common repair techniques.

Polyurethane Concrete Leveling

Polyurethane injection involves pumping a liquid resin beneath the concrete that rapidly expands into foam. As it solidifies, it solidifies the soil under the slab and lifts the sunken section flush with the surrounding driveway.

The polyurethane bonds strongly to the underside of the concrete, forming a permanent support base. It also helps prevent further erosion by sealing out water and moisture. This innovative repair method has transformed concrete leveling due to its effectiveness and durability.

Mudjacking

Mudjacking uses a cement slurry that is pumped below the sunken slab. This pushes the concrete back up into position. Once dried, the cement offers support. However, it does not chemically adhere to the concrete like polyurethane.

Over time, the cement can re-settle or wash away. This may require repeating the mudjacking process periodically as the slab sinks again. Mudjacking also involves heavy equipment and a longer curing time before the driveway can be used.

Pros and Cons Comparison

When examining the pros and cons, polyurethane comes out ahead for most situations:

• Bonds permanently vs mud settling later
• Faster curing time with less equipment
• Doesn't require future re-applications
• Resists water and further erosion
• Lifts slabs evenly and controls direction/angle

For longevity and performance, polyurethane is the clear winner for leveling sunken concrete slabs.

For more information on lifting slabs with polyurethane grout...