Frequently Asked Questions

Answers about Concrete Slab Raising and Leveling + more!
How long has Concrete Raising been around?

Concrete Raising was originally called mudjacking or slabjacking. The process has been in existence almost 100 years.

Is It Safe?

The Geo-Polymer we use is primarily recycled plastic bottles and a foaming agent. Once cured (15minutes) it is completely inert. Prior to that time, the foaming agent can cause irritation and therefore should be handled only by trained technicians.

Can all concrete be raised?

Most concrete slabs still in good condition can be raised. When large areas of concrete have deteriorated, crumbled or has fractured with cracks that are too close together, replacement may be a better option.

Can concrete slabs be “lowered”?

Generally no, but slabs that are heaved can be ground down to eliminate the trip hazard or adjoining slabs can be raised to match the raised slab.

Can driveways leaning toward the house be angled away from the house?

In most cases, yes. We can adjust the angle or pitch to most any desired. Slabjack Geotechnical can lift driveway or patio slabs and adjust the pitch to direct the water run off away from the house. We also can use caulking (joint sealing) to protect from any further water caused erosion caused by wrong slope of concrete.

How can you raise only one area of a concrete slab?

We inject solution underneath the affected area only, raising the settled area to match the surrounding surfaces. We can adjust the angle or pitch of the concrete slab.

What causes concrete to settle?

Usually, the ground under the concrete has simply settled over time, but other issues can cause problems such as flooding, water erosion, severe rodent problems and other.

What issues should you be concerned about settled, or sunken, concrete?

In most circumstances, safety issues and appearance are at the top of the list, followed by water erosion potentially causing structural and foundation damage.

How long does concrete raising take?

Most jobs are usually completed in a couple of hours, depending on the size of slab and where it is located.

How long does it take before people can walk or drive on raised concrete?

Immediately! Unlike traditional mudjacking where you need to wait a minimum of 24 hours, or new concrete 2 – 7 days, you can use your concrete the second we finish your job.

How much does Concrete Leveling cost?

Jobs are estimated by the amount of material it will take to level your concrete. Generally, this equals 1/3 – 1/2 the cost to replace your concrete. On large slabs, or indoor concrete, we will be much less costly. As a general rule, the larger the slab the greater the savings.

How long does Concrete Raising last?

Slabjack Geotechnical’s Concrete Raising provides the necessary amount of material beneath the concrete to improve soil density thus stabilizing the soil. The concrete is now properly supported and stabilized. With proper drainage and sealing, Concrete Raising is generally a permanent solution. Remember that improper water drainage can erode even the best of soils.

What is a void underneath my concrete and what are the causes?

A void is a pocket of air or water underneath the concrete. Typically clay and organic soils are more prone to voids. Water drainage issues, poor soil preparation, rodents or normal settling of soils can also create voids. Slabjack Geotechnical’s Concrete Raising will fill the voids under your concrete.

Can fractured / cracked concrete be raised?

Yes, if the concrete slabs are still in large pieces and the cracks are not located to closely together, Slabjack Geotechnical’s Concrete Raising can bring your fractured and cracked slab close to level. If the concrete has crumbled, or the fractures (cracks) are too close together then replacement would be the best option.

What are the benefits of concrete raising vs. removal and replacement?

No damage to surrounding landscaping or structures. No demolition of concrete, then removal of concrete. No down time while waiting for ground preparation, concrete forms, trucks or curing. No permits needed.

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630 Valley Mall Parkway #431 East Wenatchee, WA 98802

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Saturday & Sunday: Closed

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