Polyurethane Foam Injection Vs Mudjacking

Polyurethane foam injection and mudjacking are both methods for raising and stabilizing sunken concrete slabs, but they differ significantly in material, invasiveness, and durability. Polyurethane foam injection, also known as polyjacking, is a newer, less invasive process that uses a lightweight expanding foam. Mudjacking is the traditional method, using a heavy, cement-based slurry. 

Comparison at a glance:

Before deciding on how you want your concrete raised, it's important to understand the major differences between the methods currently available. The method you choose to fix your sunken concrete will have a big effect on how your concrete will look and how long it will stay raised. The equipment, lifting materials, and expertise of a contractor will determine these important differences. The goal of this article is to inform you so you can avoid making the most common mistakes when selecting a contractor to lift your concrete.

Feature	Polyurethane Foam Injection (Polyjacking)	Mudjacking (Slabjacking)
Material	Lightweight, high-density, closed-cell polyurethane foam.	Heavy, cement-based slurry made of sand, cement, water, and soil.
Weight	Weighs only 2–4 pounds per cubic foot, putting minimal stress on already weak soil.	Weighs approximately 100 pounds per cubic foot, which can add significant weight to unstable soil.
Process	Requires small, penny-sized holes ( 5/85 / 8 5/8 -inch diameter) to be drilled into the concrete.	Requires larger holes (1–2 inches in diameter), which are more noticeable after patching.
Invasiveness	Minimal disruption and a clean job site. Equipment is contained in a truck or trailer that can be parked away from the work area.	More invasive, requiring larger hoses and heavy mixing equipment that must be close to the work area.
Curing Time	Cures extremely quickly, allowing the surface to be used for walking and driving within 15–30 minutes.	Requires a wait time of 24–72 hours before the surface can bear weight.
Moisture Resistance	Hydrophobic foam creates a moisture-resistant barrier, reducing future soil erosion and washout.	The slurry is susceptible to water erosion over time, which can lead to resettling.
Durability	Provides a longer-lasting solution, with repairs that can last decades if properly maintained.	The heavy, erosive material often provides a shorter-term fix, with repairs typically lasting 2–5 years.
Cost	Higher initial cost, ranging from $5 to $25 per square foot.	Lower initial cost, typically between $3 and $6 per square foot.

How to decide between polyjacking and mudjacking:

Your choice depends on your specific needs, budget, and the characteristics of your project. 

Choose polyurethane foam injection if: 

• You need a long-term solution with maximum durability and minimal risk of resettling.

• You want a less visible and cleaner repair. The smaller holes and less equipment result in minimal disruption to your landscape.

• The repaired area needs to be used immediately, such as a high-traffic driveway, walkway, or roadway.

• The underlying soil is unstable, weak, or prone to erosion. The foam's light weight won't worsen the problem. 

Choose mudjacking if: 

• You need the most budget-friendly option for concrete leveling.

• The project involves large concrete surfaces where the higher cost of polyurethane is prohibitive.

• The cosmetic appearance of larger patched holes is not a major concern.

• You are willing to accept the risk of future settling and potential repeat repairs. 

• Mudjacking vs. Polyurethane Foam Raising: Which Is Right for You?

  
  

For your free no obligation estimate call Master Lift Foundation Repair today! 918-565-8544 or visit us on the web at www.MasterLiftOK.com