Frequently Asked Questions

HOW MUCH DOES CONCRETE RAISING COST?

Concrete raising is typically about half the cost of replacing the same concrete. Ultimately, the cost of raising or stabilizing concrete is a direct reflection of how much leveling material the project will require. In general terms, concrete raising can cost between $2-$5 per square foot.

For example: a 10 ft. x 10 ft. section, that needs to be raised, figures to 100 square feet. This job would cost somewhere between $200 and $500 to repair. How far the slab is settled, if there are voids present, or if other sections need to be involved in the repair, will determine where in that scale the job would cost. This is why we offer FREE estimates, so our experienced crew member can come to your home or business, and provide you with an accurate estimate for completing your specific project.

WHAT KIND OF MATERIAL DO YOU USE TO RAISE CONCRETE?

Polyurethane foam concrete raising material is injected as a liquid that sets-up as a rigid foam. This foam will NEVER lose density or shrink. This material is lighter than traditional mudjacking material, and requires less holes to install. Even better, the holes are smaller creating a virtually invisible repair!

Concrete Repair Chicago, IL

WHAT ARE THE BENEFITS OF POLYURETHANE?

  • Smaller and fewer holes are needed to complete job
  • Hole repair almost unnoticeable
  • Completely cured and ready for service within 15 minutes
  • Strong, light weight and dense
  • The foam will find a path to fill in all gaps and voided areas under concrete
  • The foam is not weakened by moisture or chemicals found in soil
  • The foam will retain its structure and strength reducing the possibility of new gaps or settlement
  • The foam seeks out weak soils and voids during expansion, creating a strong and denser base
  • Polyurethane foam is environmentally friendly. It is an inert material that is self contained and does not leach.

WILL THERE BE HEAVY TRUCKS ON MY LAWN?

The PolyTech Lifting trucks remain parked on the street, a hose is ran straight from the truck/trailer to the repair site without driving a single piece of equipment on your lawn.

HOW DO YOU FILL THE HOLES?

The holes are filled with a high density cementious grout and finished to match the existing concrete.

IS THERE ANY MAINTENANCE NEEDED?

When our work is completed, it will be your responsibility to caulk the seams of the sections that were repaired, or backfill against any exposed areas to contain the material, and prevent future sinking.

Self-leveling cement caulk can be purchased easily at a home improvement store and works great for sealing joints. Using a silicone based, self-leveling caulk, is recommended. If a crack is very large, to use less material, sand can be used first between the crack, before applying the caulk on top.

Preventing water from going under the slab is key to preserving the repaired slab. Make sure that your downspouts are correctly placed, to assure water runs away from your concrete slabs or foundation.

Taking these suggested steps for preserving your raised concrete is a condition of your PolyTech lifting warranty.

WHAT CONCRETE CAN BE RAISED?

Solid slabs of concrete can be raise and stabilized. Gravel areas or blacktop are unable to be repaired, and need to be replaced or re-installed to remedy settling issues. Slabs of concrete that are badly cracked may also be too damaged to lift.

If you are not sure if your concrete can be raised, call us for a Free Estimate. Raising settled concrete can be half the cost of replacing it with less damage to your landscaping and downtime. Our expert estimators will be able to assess and provide you with an accurate, FREE estimate for your project.

WHAT IS THE DIFFERENCE BETWEEN MUDJACKING AND POLYURETHANE CONCRETE RAISING?

Both methods of concrete lifting will achieve the same results. Mudjacking concrete leveling and polyurethane concrete raising will raise and support sunken or unstable concrete slabs by drilling holes and pumping material under the slab.

MATERIAL

Settled concrete is commonly a result of poor soil conditions beneath a slab.

Polyurethane has become a popular repair method because the material is so lightweight compared to traditional mudjacking material, it will not further burden the already weak soil.

Polyurethane Concrete Raising uses a foam material that is injected under the slab. When the components of this material are mixed, a reaction causes the material to expand. This expanded foam fills any voids beneath the slab and raises concrete. This material will never lose density, is permanent and weighs only about 2 lbs. per cubic foot.

IS THIS LIKE THE STUFF THAT COMES OUT OF THE CAN?

This is probably our most commonly asked question and arguably the most important. The only similarity between the foams 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. The systems that we use are manufactured by HMI, the only company that makes polyurethane from recycled materials. HMI's patented materials (US Provisional Patent Application No. 61/583.295) are made from recycled components, making it the "greenest" polyurethane foam on the market.

DOES POLYTECH LIFTING USE TOXIC CHEMICALS?

Major toxic chemicals often associated with some types of polyurethanes, such as some blowing agents, formaldehyde, benzene and toluene are not used in our foams. Most of what is warned on the internet pertains to these chemicals. The foam we use is as safe as the cushion you sit on or the bed you sleep on. Instead of being built in a factory we make the foam directly under the slab, the only difference is that it is not light and fluffy but firm and strong!

HOLES

After the slab has been raised, the only visible evidence that the concrete has been repaired are the holes. For this reason, polyurethane has gained HUGE popularity because of the nearly invisible 5/8" holes that remain after the job is completed.

Mudjacking involves drilling a series of 1" holes in a slab of concrete, so the material can be pumped under the settled slab.

Polyurethane concrete raising drills a nearly invisible 5/8" hole and the process calls for considerably fewer holes than traditional mudjacking. We have saved customers thousands, versus if they would have replaced their concrete.

INVESTMENT / COST

Concrete raising is typically half the cost of replacing your concrete slab. When large voids are present, this can increase the cost of the repair. While polyurethane material is more expensive than mudjacking material, the smaller hole size, lighter material weight, and fewer injection holes, make the investment in polyurethane over mudjacking well worth it.