Mudjacking vs. Polyjacking: Which Concrete Leveling Method is Better?

When it comes to leveling uneven concrete surfaces, two popular methods are mudjacking and polyjacking. Both are effective ways to raise sunken concrete slabs, but they work differently and have distinct advantages and disadvantages. Understanding these differences can help you choose the best method for your needs.

As an expert in the concrete repair business, I’ll guide you through the intricacies of mudjacking and polyjacking in this clear-cut comparison, helping you decide which method will best restore safety and appeal to your concrete surfaces.

How Does Polyjacking Concrete Raising Work

Also known as polyurethane concrete lifting foam or concrete leveling with foam, petroleum-derived expanding foam raises concrete slabs. Polyurethane is a manufactured, two-part chemical product that mixes isocyanate with a polyol. As the reaction occurs, the foam product expands, raising the concrete slab.

5/8″ or penny-sized holes are drilled through the concrete slab in an attempt to mitigate water penetration issues. However, the protective polyfoam barrier used to fill these spaces often falls short, failing to completely prevent moisture from seeping in.

Despite efforts to seal the gaps, water can still find its way through, potentially leading to ongoing moisture problems.The polyfoam is mixed and injected through these holes and expands below the concrete, yielding an average compressive strength of 80 to 100 psi.

Sufficient expansion to fully support the concrete slab and prevent water penetration can be difficult as the product sets in 15 minutes, often requiring more drill holes than the mud jacking process.

Polyurethane foam injection can sometimes access tight areas that are not accessible with Mudjacking equipment. However, the concrete lifting foam process can be limited by distance from the truck or trailer that contains the drums of chemical foam and mixing equipment, such as in backyards needing Concrete Pool Deck Repair.

Experienced operators and care when injecting poly foam are critical with Concrete Poly Leveling. Mixing the product for injections generates heat and has been known to self-combust into flames. The product is also toxic and off-gas. Proper personal protective equipment must be worn during installation.

The Advantages and Disadvantages Polyjacking Concrete Lifting

Advantages:

• Polyurethane concrete leveling is best in areas with limited access that cannot be accessed with Mudjacking equipment.
• Polyleveling requires a slightly smaller drill injection hole at 5/8” versus 1” for Mudjacking.

Disadvantages:

• High-density polyurethane foam is flammable and has a history of self-combustion issues and off-gassing during installation, resulting in building fires, health-related lawsuits, and death.
• Concrete recycling facilities do not accept poly foam, which adds additional separation/labor costs and disposal costs during concrete replacement.
• Polyurethane concrete raising foam is derived from crude oil and transported to a refinery, a distribution facility, and then to the contractor. This often results in higher manufacturing, transportation, and product costs for the homeowner or end user.
• Sticks to and damages surrounding concrete surfaces, siding, railings, etc.
• Foam breaks down over time.

How Does Mudjacking Work?

Mudjacking history dates back to 1930 when a mechanic for the Iowa State Highway Commission named John Poulter used his new invention in Burlington, Iowa. He created mudjacking holes and forced a cement-infused mud slurry through these access holes drilled into the concrete. The process, nearly 100 years old, has a history of success on highways and other concrete slabs and is still widely used.

Mudjacking is also known as cement slurry grout injection or Concrete Leveling. The cement slurry uses various all-natural, earth-based materials from local quarries, such as sand, limestone, and clay. It is mixed with Portland cement to achieve a minimum strength of 500 psi. or higher.

Small holes of 1” or quarter-size are drilled into the concrete slab. The cement grout is injected, filling voids under the slab and floats it back to its original position. The holes are then patched with high-strength cement.

The cement slurry grout mix can be adjusted onsite. It can be tightened or loosened, and additional cement can be added to accommodate specific job specifications and requirements.

The Advantages and Disadvantages of Mudjacking

Advantages

• All-natural, locally sourced materials without the recyclability, flammability, or health risks associated with polyurethane foam.
• The compressive strength of poly foam is five times or higher. Strength can achieve 5000 psi and be adjusted onsite based on application.
• Will not stick to or damage surfaces like polyurethane concrete leveling.
• The product is not petroleum-based, handled, stored, and transported like poly foam, resulting in lower material costs.
• It is easier to control, resulting in a higher job success rate.
• A time-proven method that has proven to be durable and long-lasting.

Disadvantages

• Requires a slightly larger hole that is 3/8” larger.
• The method can sometimes be limited by poor job access in rare circumstances.

Key Differences Between Mudjacking and Polyjacking Concrete Leveling Methods

Cost Efficiency Comparison

One of the most significant differences between mudjacking and polyjacking is the cost. Mudjacking is generally more affordable than polyjacking. The materials used in mudjacking, such as cement and sand, are less expensive than the specialized polyurethane foam used in polyjacking. Additionally, mudjacking requires fewer materials and simpler equipment, which helps keep costs down.

For homeowners or businesses looking for a budget-friendly option to fix uneven concrete, mudjacking is often the better choice. It provides a long-lasting solution without the higher price tag associated with polyjacking.

Longevity and Stability Outcomes

When it comes to longevity and stability, mudjacking has a proven track record. The slurry mixture used in mudjacking can achieve a compressive strength of up to 5,000 psi, making it incredibly durable. This method has been used successfully for nearly a century, with many projects lasting for decades without issues.

On the other hand, while polyjacking can be quicker to install and cures faster, the long-term durability of polyurethane foam is less certain. The foam is subject to degradation over time, particularly in areas with extreme temperatures or moisture. This can lead to the need for repeat repairs sooner than with mudjacking.

Environmental Impact and Cleanliness

Another critical factor to consider is the environmental impact of each method. Mudjacking is the more environmentally friendly option. The materials used are natural, locally sourced, and non-toxic, making mudjacking a green solution for concrete repair. The slurry mixture poses no significant environmental hazards and is 100% recyclable.

Polyjacking, on the other hand, involves using polyurethane foam, a petroleum-based product. While polyurethane is biodegradable, it takes around 20 to 30 years to break down. During this long degradation process, the material can contribute to landfill waste, and its production and disposal still have a larger carbon footprint compared to the natural materials used in mudjacking.

In terms of cleanliness, mudjacking also comes out ahead. The process is less likely to cause damage to surrounding areas, as the slurry does not stick to surfaces like the foam used in polyjacking. This means fewer worries about staining or damaging nearby structures, such as driveways or siding.

Here’s a comparison table that highlights the differences between mudjacking and polyjacking

Why You Should Choose Mudjacking

Mudjacking has a long history of success, making it a trusted and reliable method for concrete leveling. Its effectiveness has been proven over decades, particularly in challenging environments like highways and large concrete slabs.

This track record makes mudjacking a dependable choice for concrete repair. Meanwhile, polyurethane foam’s long-term durability has yet to be proven.

The materials used in mudjacking are safe and do not pose health risks. Unlike polyurethane foam, which can stick to and damage surrounding surfaces, the mudjacking slurry is easy to clean up and won’t cause stains or damage to nearby structures. This makes mudjacking a cleaner and safer option for concrete repair.

The mudjacking procedure allows for on-site adjustments to the slurry mixture, ensuring that the material is perfectly suited to the specific needs of your project. This level of control leads to higher success rates and better overall results. With mudjacking, you can be confident that the job will be done right the first time.

Where to Get a Mudjacking Contractor

There are several ways to repair settled concrete; the most traditional method is concrete replacement, which is time-consuming and costly. Surprisingly, most homeowners and businesses are unaware that a Concrete Raising method exists.

To find a concrete leveling contractor in your local area, search for patio concrete leveling, mud jacking, Concrete Raising, concrete lifting or “concrete repair or mudjacking services” in your area.

The community buzz or reputable online reviews can steer you towards reliable providers who have proven their worth. Visit their websites, check out their ratings, and don’t skip past those customer testimonials—they’re goldmines of insight!

To ease your search:

• Scour local listings and online reviews.
• Ask your personal network for contractor referrals.
• Consult construction suppliers for recommendations.
• Request free inspections and estimates.
• Look for service guarantees and warranties.

If you need concrete repair in the New Jersey or Eastern Pennsylvania, check out Our Services at Concrete Chiropractor. We are “The Trusted Leading Experts in the Concrete Repair Industry Since 2000.” Contact Us for a professional evaluation.

FAQs about Mudjacking vs Polyjacking

Is One Method More Environmentally Friendly Than the Other?

Yes, mudjacking is more environmentally friendly than polyjacking. Mudjacking uses natural, locally sourced materials like cement, sand, and water, which are non-toxic and 100% recyclable. In contrast, polyjacking involves the use of polyurethane foam, a petroleum-based product. While polyurethane is biodegradable, it takes 20 to 30 years to break down and has a larger carbon footprint due to its production and disposal processes. Mudjacking’s minimal environmental impact makes it the greener choice for concrete leveling.

Can Both Mudjacking and Polyjacking Be Done DIY, or Should You Hire Professionals?

Both mudjacking and polyjacking should be performed by professionals. These methods require specialized equipment and expertise to lift concrete evenly and safely. Improper handling, especially with polyjacking, can lead to issues like incomplete lifting, damage to surrounding structures, or even safety hazards due to the chemicals involved in polyurethane foam. Hiring a professional ensures that the job is done correctly, effectively, and safely, providing long-lasting results.

How Long Does Polyurethane Concrete Raising or Mudjacking Last?

Mudjacking has a proven longevity, with many repairs lasting for decades. The slurry used in mudjacking can achieve a compressive strength of up to 5,000 psi, providing a durable, long-term solution. Polyurethane concrete raising can also be long-lasting, but its durability over time is less proven. The foam is subject to potential degradation, especially in extreme environmental conditions. While both methods can be effective, mudjacking offers a more reliable, time-tested solution for concrete leveling.

Why Do Concrete Slabs Such As Sidewalks And Driveways Become Uneven?

Concrete slabs, such as sidewalks and driveways, become uneven primarily due to soil settlement or erosion underneath them. Over time, the soil beneath the concrete can shift, compact, or wash away, causing the slab to sink or tilt. Other factors include improper drainage, tree roots, and heavy loads on the concrete surface. These issues disrupt the stability of the concrete, leading to uneven surfaces that can create safety hazards and reduce the overall lifespan of the concrete structure.

Learn more about Mudjacking and Polyurethane foam concrete leveling methods with these articles from our Learning Center, our concrete chiropractor’s informational resource center.