Caulking and why it is necessary


A question we get often is “Can you seal my cracks and joints on my concrete?” and yes, the answer is yes!

There are many different reasons why you would want to make sure the joints of either your driveway, walkway or patio is sealed up. First reason we recommend caulking those joints are to make sure there is no water from either rain fall or sprinklers that can get down through those cracks and or joints to cause erosion which then leads to voids under your slabs leaving the concrete unstable and vulnerable to crack due to pressure and more likely to settled.

Another reason our estimators would recommend caulking these areas would be it gives the concrete a nice finished look. (some before and after photos attached at end)

There are many benefits from caulking the joints and cracks of your concrete but by giving us a call at Slabjack Geotechnical we can point you in the right direction to get your concrete in the best shape!

Superior Technology, Superior Polymers, Superior Training, producing Superior results.

To Raise or Replace


The big question, once you have decided to do something about your settled concrete do you replace it or raise it?

This big question generally comes down to cost and if that is the only criteria then raising will be less costly in virtually every case. There are many advantages in raising rather than replacing, raising maintains the consistent look of the surrounding concrete, there is little or no damage to landscape and it will be available immediately.

What are the advantages of pouring new? It will look bright and new and the shape can be altered if desired. If there are fractures (cracks) especially several of them, we generally recommend replacement because raising the concrete will often open up the cracks further making them more noticeable.

You can count on Slabjack Geotechnical to deal honestly with you so your decision is the best choice for you. There is a time for raising and a time for replacement, we will present options so you can make the best choice for your unique situation.

Give Slabjack Geotechnical a call today to speak with one of our experienced office staff about setting up an estimate.

Superior technology, Superior polymers, Superior results.

MRSC Roster- Slabjack Geotechnical


The MRSC roster is used by participating municipalities and other agencies to find approved vendors and contractors to do business with. Slabjack Geotechnical is one of these vendors. If you are a governmental agency then Slabjack Geotechnical is an approved concrete raising and leveling business.

From the state to the county and city along with school districts, housing agencies, water districts, irrigation districts and more Slabjack Geotechnical is your source for concrete raising a leveling in addition to crack and joint ceiling and concrete surface sealers.

Specializing in polyurethane injection Slabjacking for the ultimate in Longevity and durability most jobs are completed in a single day. With the capability of bringing multiple rigs to the job Slabjack Geotechnical can handle the largest jobs whether it be a county culvert stabilization project, raising a state highway bridge approach or a school district with side walk trip hazards we are your one stop contractor in concrete leveling and stabilization. Call today,


Superior technology, Superior polymers, Superior results.

Can water be a cause to my settling issues?- Slabjack Geotechnical


Poor compaction coupled with excess water causes virtually all the settled concrete we see.

We got a call from a homeowner that their fifty year old home was experiencing some settling on a porch and some attached brickwork. I asked, “the house is fifty years old and the settling just happened?” She replied yes but they had recently installed gutters and downspouts and she suspected that might be the cause.

A site visit showed that she was correct, the downspouts was dumping runoff right at the point of settling. An estimate was provided and the work was completed using Geo-polymer Slabjacking as well as sub grade concrete and steel bracing for the decorative brickwork.

This is so common.  Here’s how to prevent the problem;

New construction – install gutters and downspouts before concrete is poured, insuring water is directed well away from porches, walks, driveways and foundations. Where municipal codes allow, tie into storm drains, if not, dig French drains or use other methods to avoid saturating soils near concrete slabs.  Other concerns are landscape plantings too near foundations and slabs, tree roots, ponds and sprinkler systems.

Existing homes – design the gutter system with the intent to have water going somewhere other than near concrete slabs and structures. This may necessitate tunneling under walks with a drain pipe directing water well away from the home. If this is impossible a French drain can be dug, rain barrels used  or use the retracting downspout extensions that unroll to direct water away from structures when there is run off.

Take the time before settling occurs to correct deficiencies and you will avoid the problems associated with sinking concrete.

Slabjack warranties generally require the correction of the problem that created the original settling. In the vast majority of cases it means making corrections to your drainage system, eliminating plantings that require substantial water, reducing sprinklers or using drip lines instead.

Slabjack Geotechnical is a great resource when it comes to diagnosing the cause of settling and recommending corrective measures to prevent further settling. Call today,


Superior technology, Superior polymers, Superior results.

Concrete Trips- Slabjack Geotechnical


According to the National Floor Safety Institute the average medical cost from a slip/trip fall is $22,800! The potential legal costs and jury awards are several times that amount. Rather than ignore the “little trip” have it fixed by Slabjack Geotechnical.

Whether it be a walk from your driveway, a trip on your driveway or a sidewalk by the street, you, the homeowner, not the city, are responsible for maintaining the walk and keeping it free from snow, debris and known hazards such as trips due to settled concrete.

A quick and unobtrusive process, Slabjacking raises settled concrete through the use of an expanding polymer grout. Most jobs are done in a couple of hours and the walk is available for immediate use. No waiting for forms, concrete and curing. No destruction of lawns or plant, just a quick drill, inject and patch.

Call today,


Superior technology, Superior polymers, Superior results.

Concrete Voids- Slabjack Geotechnical


Voids under concrete eventually lead to cracking and/or settling concrete. Voids are created when concrete is partially supported by base soils or through the use of anchors or rebar to foundation walls or through the use of Sonotubes. As the soil settles or is carried away by other means a gap opens up between the soil and the bottom of the concrete slab resulting in a loss of support.

Un-compacted fill dirt, erosion, burrowing rodents, decaying organic material even a loss of moisture in the soil can create voids. Once there, voids are difficult to fill. Smaller slabs such as walks can be packed with gravel or sand to fill voids but this is not practical for larger slabs such as driveways or patios. These need a method that supports but doesn’t lift the slab. Using an expansive polymer is the ideal material for void filling for several reasons such as;

Polyurethane can travel several feet in every direction to fill voids, fissures and holes. It has the ability to consolidate organic material, sand and loose rock. If properly monitored Polymer injection can provide support without excessively lifting or stressing the slab which causes fractures.

The question with new construction is what should I do? Settling of soil in new construction can go on as long as 10 years so the question becomes do you live with it and replace your broken up concrete at some later time or do you try and preserve it knowing that you may have someone out 2, 3 or 4 times in the next decade to shore up what should’ve been taken care of during initial construction. Immediate replacement of settled concrete or concrete with voids is not a good choice as settling is not yet complete.

If you see a void opening up under your concrete slabs give the concrete raising and leveling professionals a call we will get you taken care of.


Superior technology, Superior polymers, Superior results.

Concrete Leveling in Washington


Curious about concrete leveling and void filling? When we come to your site we are bringing $100,000 worth of concrete leveling equipment, tools and material, along with the experience of our crew having raised thousands of settled concrete slabs.

As we arrive on the job site, the first thing we do is start the equipment and while the material warms, we determine the best location for the injection valves and drill 5/8″ holes at those locations. For very narrow slabs settled on their side, jacks may be used to position the slab prior to the lifting process.

To monitor the lift we use extremely sensitive gauges are used that measure 1000ths of an inch. This is important so we don’t over lift the slab. Those gauges are also critical when void filling where lift is not desired.

Once the lifting and/or void filling is complete the holes are patched with quick-setting mortar, tinted and colored, if necessary, to match your concrete and the job site is swept clean. When we leave, your are free to use your concrete. We use quick set mortar that is hard after about half an hour, but you will want to avoid direct water pressure for a day.

When you hire Slabjack Geotechnical to raise your settled concrete, you can rely on four things; Superior Technology, Superior Polymers, Superior Training, Superior Results.

Settled concrete in Spokane, Yakima, Tri-cities and Wenatchee


Slabjack Geotechnical is the most experienced Slabjack contractor using the latest process, polymer injection.

Sometimes referred to as mudjacking, pressure grouting and polylevel, Slabjacking is the name used to define the process of raising concrete that has settled.


1-855-752-2522 covers the entire area of central and eastern Washington as well as northern Idaho for residential concrete raising. In addition 1-855-752-2522 covers the entire Pacific Northwest for commercial municipal and industrial concrete raising void filling stabilization and slab curl correction.

We service Spokane and all surrounding areas, Richland, Pasco, Kennewick and surrounding areas in Tri-Cities, Wenatchee, Lake Chelan, Leavenworth and all surrounding areas, Yakima, Selah, West Valley and all surrounding areas, we are also licensed in Idaho State and serve Coeur ‘D Alene, Post Falls, Hayden and surrounding areas in North Idaho.

Allow the most experienced concrete raising and leveling professionals to take care of your settled concrete today.


Superior technology, Superior polymers, Superior results.


The many causes of concrete settlement


It’s unsightly, it’s dangerous, it’s a potential liability but it’s easy to fix.

Concrete settlement is a very common problem affecting not only residential neighborhoods but municipalities commercial enterprises and industrial facilities. What causes concrete to settle?

1. Failure to prepare the site. If soil was disturbed during construction was it re-compacted? Was there a 4-6″ layer of compacted gravel placed under the slab? These two primary issues are the cause of much of the settling commonly found in new construction.

2. The next most common cause of concrete settlement is excess water. Dealing with water runoff is generally not on a builders mind at the start of construction, it should be. Trying to figure out where you were going to put downspouts, sprinklers and  water features after sidewalks porches and driveways have been poured is poor planning and asking for concrete settlement. Having a place for your run off to drain such as french drains well away from structures or into municipal water supplies if allowed in your jurisdiction will help your concrete remain stable.

3. Another cause of concrete settlement is the breakdown of organic material in your soil. As roots, debris and other organic material breaks down is creates void space that contributes to settlement. Water migrating through the soils takes with it small amounts of soil and sand and these also contribute to the gradual settling of soil.

4. Finally ground water migration can play a role in settlement in some instances particularly if you have a high water table. We did a municipal job where groundwater migration had created a six-inch avoid behind a municipal pool. While there is little you can do about a high water table you can fill voids as quickly as possible so the supporting soils are capable of carrying the load above.

In addition to the above, the type of soil that is predominate in your area plays a role in its ability to support structures. Whether it be sand, clay or silt each has advantages and disadvantages depending on its use. Some soils don’t drain well others are prone to wash out, still others will actually expand as much as 10% with water!

If someone failed in the planning phase and you are dealing with concrete settlement give the concrete raising of leveling professionals a call today.


Superior technology, Superior polymers, Superior results.


What can be done about a settling foundation?


Slabjack Geotechnical is now a certified installer of Pier Tech helical piers and we are excited to offer this service rather than refer it to a company hundreds of miles away.

What can be done about a settling  foundation? 

If you are dealing with the nightmare of a settling foundation here is what you need to know;

-In most cases it is repairable. While not an inexpensive repair, doing nothing is usually not an option unless you plan on walking away from the home. Here’s how to proceed;

First determine that foundation settling is the issue and not simply an interior slab settling. Slabjack Geotechnical is equipped to handle either problem but one requires a building and a geological engineering report the other doesn’t.

Once the determination is made that the foundation is settling the property owner hires the engineers, they will determine the position and the number of piers to be used. The soils engineer will be on site during the repair process in case obstructions such as large boulders are met to makes recommendations and/or approve changes in the placement of piers.

Most piering jobs are completed in a few days.

The cost for the pre-work reports runs about $4-7,000 with an additional $1850-$2150 per pier depending on depth and obstructions encountered. An average foundation repair job runs in the neighborhood of $15,000, not an insignificant amount.

If you have seen the tell-tale signs of settling; cracks in brick and stucco or sheet rock separation call us today, we can help.


Don’t settle.

Superior technology, Superior polymers, Superior results.