When comparing polyurethane foam (also known as polyjacking) to traditional mudjacking, there is a significant difference in the size of the holes required to perform the repair:

• Polyurethane Foam: This method is minimally invasive, requiring only small drill holes ranging from ⅝″ to 1″ in diameter. These “dime-sized” openings result in less damage to the concrete slab and are much easier to patch and blend, leaving a cleaner finished surface.
• Mudjacking: This traditional method requires much larger entry points, typically between 1½″ to 2½″ in diameter. Because these holes are significantly larger, they are more visible after the repair and require more extensive cosmetic patching.

Choosing the smaller hole size of polyurethane foam not only preserves the aesthetic of the concrete but also reduces the overall scope and cost of cosmetic repairs following the lifting process.

• Polyurethane Foam vs Mudjacking: 2026 Comparison Guide