Frequently Asked Questions

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 Step-by-Step Process:               

1. Assessment & Preparation

• A technician inspects the sunken concrete to determine the best points for injection.
• Small drill holes (about ⅝ inch in diameter) are made in the concrete slab.

2. Injection of Polyurethane Foam

• A specialized injector gun is used to pump a two-part polyurethane foam under the slab.
• The foam expands immediately, filling voids and lifting the slab back to its original level.

3. Expansion & Lifting

• The foam spreads under the slab, filling gaps and compressing the soil beneath it.
• As it expands, it gently lifts the slab to the correct height.

4. Sealing & Cleanup

• Once the desired level is reached, the drill holes are patched with a matching concrete mix.
• The area is cleaned, and the concrete is ready for use within 15 minutes.

Both polyurethane foam injection(P) and mudjacking(M) are used for concrete leveling, but they have significant differences in material, process, durability, and cost. Below is a comprehensive breakdown to help you decide which method is best.

Drill Hole Size: Small (⅝ inch) VS Large (1-2 inches)

Material Injected: Expanding polyurethane foam VS Cement-based slurry

Weight of Material: Light weight VS Heavy

Expansion & Lift: Quick & controlled VS Slower & less precise

Cure Time:15-30 minutes VS 24-48 hours

Longevity: Long-lasting, resists shrinkage VS May settle again over time

Strength: High compressive strength VS Strong but heavier

Water Resistance: Yes, waterproof and prevents erosion VS No, can absorb water and degrade

Soil Stability: Helps stabilize the ground VS Can add weight, causing further sinking

Shrinkage Over Time: Minimal VS Can shrink or wash away

Average Cost: $5 – $25 per square foot VS $3 – $8 per square foot, mainly depending on sinking depth and area

Labor & Material Costs: Higher due to specialized foam VS Lower, but more material needed

Longevity & Maintenance: Less maintenance, long-lasting VS May need reapplication in a few years

Total Cost Over Time: More cost-effective in the long run VS May cost more due to rework

Eco-Friendly: Some foams are eco-friendly VS Uses natural materials but more invasive

Safety & Cleanliness: Less mess, smaller holes, quick process VS Can leave residue and larger holes

Impact on Landscaping: Minimal VS More disruptive

✅ Use Polyurethane Foam for:

• Driveways, sidewalks, and patios with minor settling.
• Garage floors and indoor slabs where precision is important.
• Areas with frequent water exposure (since it's water-resistant).
• Long-term durability without adding excess weight.

✅ Use Mudjacking for:

• Large-scale projects where cost is the main concern.
• Heavily damaged slabs that need a stronger initial lift.
• Non-critical applications where some re-settling is acceptable.

• Polyurethane foam is the better long-term solution due to its durability, water resistance, and precision lifting.
• Mudjacking is more budget-friendly upfront but may require reapplication in a few years.
• If the area has significant water issues or unstable soil, polyurethane foam is the clear choice.
• If cost is the primary concern and the project is temporary, mudjacking can work. 

This is probably most typical question being asked, and arguably the most important. The only similarity between the foam we use and what comes out of the can is that they are expanding foams. Other than that, they have nothing in common. There are nearly a 1000 different types of expanding foams, and every one serves a different function.  

With residential work, the majority of projects can be completed in less than a day, usually in a few hours or less. With commercial or municipal projects, the duration depends on the scope. 

This is a GREEN product. The components used are manufactured with recycled materials and are natural polyols, which are completely non-toxic and environmentally safe. Once the components are mixed, the polyurethane develops an outer skin, like a balloon, to contain the reaction process, which makes it completely inert. There are absolutely no environmental restrictions on our material. 

Because polyurethane cures as a solid structure, it doesn’t have the same potential for fracture and failure as does a sandy slurry. Polyurethane is a completely inert, solid material that is impervious to water, chemicals, insects, rodents, ground movement or erosion, and as long as the substrate continues to perform the polyurethane will last forever. 

Our trucks are parked in the street or right of way and light weight, flexible hose is pulled across the hardscape, directly to the affected areas. At no time will any landscape be accessed or disturbed, making the project minimally invasive and your property undisturbed. 

The equipment we use is permanently mounted on our trucks and trailers. The noise they generate is contained, for the most part, to the units. The injection gun used to inject the material under the concrete, makes little to no noise. All in all, compared to many other concrete repair companies, our service is extremely quiet! 

Yes, it can, and more than likely it will, especially in exterior environments. Depending on the time of year, soil can expand or contract depending on the level of moisture present. The concrete that is sitting on top of the soil is subject to that same movement. It’s important to know that the polymers that we inject do not fail. It is not uncommon for concrete to show signs of settlement up to as much as an inch in the summertime from repairs that were just performed in spring. This is no cause for concern. There’s a very good chance that the concrete will return to original once moisture returns to the soil in the fall and winter. If it looks as though you’ve experienced some settlement a few months after the repair, especially in the summertime, do not be alarmed. Be patient, and wait to see what happens in the fall and winter. 

While concrete leveling addresses uneven and sunken slabs, it may not fully repair existing cracks. However, it can help prevent further damage and deterioration. Proper seal of cracks after repair may be necessary to improve its appearance and water tightness

Polyurethane sets up in minutes. The material is fully cured and ready to return to service in 30 minutes. You can use your concrete again by the time we drive away!