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What do the experts say about raising concrete with polyurethane foam?

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“Bigger is Better”

concrete leveling denver

Never Worry – AAA will never use Poly Foam – and we do drive the largest truck in the business to ensure we can fill all of the voids necessary to level your concrete!

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Family-owned and operated since 1988, AAA Concrete Raising Company brings the “monster” truck of the industry to every job. It carries about ten yards of materials (sandy loam soil), about two times more than our competitors. So we’ll always have enough materials on hand to get the job done thoroughly.

We’ve installed a backhoe to eliminate the need to hand shovel. No other concrete company provides this technology and you don’t have to worry about the truck damaging your property in any way; it remains on the street at all times.

An experienced mudjacking contractor knows how important it is to pump the proper thickness of mud slurry. Often, the thickness is changed several times when raising a slab correctly. AAA has a portable pump that is designed for mudjacking. With our shorter pump hose, we can change the thickness of our slurry much faster and more efficiently. Others are stuck with a lot of material in a long hose that could be the wrong thickness. Pumping the wrong thickness of slurry often leaves cavities under the slab and could even break the slab during concrete leveling.

We offer specialized, state of the art equipment that we have personally developed.

Our Customers Say

AAA Concrete Raising is as good as it gets for fixing sinking patios! I had a severely sinking patio/stairs in my backyard where it was actually getting dangerous just to step outside due to the drastic drop. I contracted with a polyurethane company to inject foam and thereby lift the concrete slabs. Big Mistake!!

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Lynne T.

I thought I was faced with having to completely remove and replace the concrete floor, which would involve removing some interior walls. Then I called Howard and he came out and told me he could fix it. The cost was very reasonable and he and his crew came out exactly at the time he promised. They did a fantastic job! I highly recommend AAA Concrete Raising Company. I was totally satisfied!

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Dewey W.
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How Mudjacking Works – Video

Frequently Asked Questions

Mudjacking is an alternative to replacing concrete.  We drill holes in the existing concrete slab and use a sand slurry mixture to raise the existing slab back to its original elevation.  It normally costs significantly less that concrete replacement and can fix a host of problems, including drainage issues, trip hazards, steps that are too big and many other liabilities.

Our slurry is a specially prepared blend of several types of earth that is the densest fill material we can get our hands on.  It is denser than the existing ground on which your concrete sits and is ideal for the mudjacking application.

When mudjacking first started, it was thought that adding concrete improved the quality of the job.  This has actually been proven false as the industry has developed over the years.  The single most important part of mudjacking is to completely fill the voids under a slab in order to stabilize it.  Adding concrete to the slurry mix actually increases the drag as the slurry travels under the concrete.  This in turn means the slurry doesn’t flow as well and, as a result, doesn’t fill the voids as well.  A straight sand, slurry mix with no concrete added actually flows much better under the slab resulting in a complete fill of voids under the slab which insure a better job that will last longer.

While it varies based on the size of the job, virtually all residential jobs can be complete in a day or less.  Mudjacking is a relatively quick process and the area is ready for immediate use again.  The only exception being areas on which cars park (garage floors and driveways).  We ask the customers keep their cars off of these areas until the next morning.  Having said this, you will not hurt the work if you MUST drive your car on it immediately afterwards – we simply tell customers the day as an added precaution.

We start by drilling a series of holes in the concrete with a rock drill.  After mixing up our mud slurry (the consistency of it is determined by the requirements of each individual job), we load it into our pump and then use large mud hose and something called “the wand” to pump the mud into the holes we have drilled and underneath the slab.  As the slurry is pumped in, the slab slowly begins to rise.  We continue this until the slab is at its proper elevation.  After the slab has been raised, we wash everything down and then plug the holes we cement.

The most important step in raising concrete is not the actually raising of the slab.  Instead, the critical component is making sure all the voids under the concrete are filled after it has been raised.  This includes the voids that were present before the slab was raised, as well as, any voids created during the raising process.  Too many contractors doing our work will raise the slab on pillars or columns of material (whether a traditional slurry or the newer poly foam products) and leave voids in between these columns.  Imagine holes that are 5 feet apart with 18” diameter pillars underneath them, for example.  There will be a large void, or cavity, between these pillars that is not filled in.  A job that is done like this (i.e. raised but not stabilized) will fail.  To insure a job that lasts, a contractor must not only raise the slab but also fill the voids created during the raising process.

The owner of the company is always on the job site with his crew to do the work.  Even better, he will be present for the estimate as well.  This insures hands on control from start to finish and gives every customer the peace of mind to know that they will be dealing with the person who runs the company!

We drive a full size semi-truck with a big box on the back that carries 10 yards of material.  We also have a 30 foot equipment trail hooked up behind.  The full rig is almost 60 feet long and carries twice as much material as anyone else doing this work.  All that material insure that we always have enough material to not only raise your concrete but make sure that all the voids are filled, the single most critical step to a complete, lasting mudjacking job.

The owner comes out and does the estimating himself.  This has a couple of benefits.  First, customers are always talking to the person in charge (he also comes out to do the jobs themselves) so there is no break down in communication through multiple levels of subordinates.  Second, this insures that every job has been seen by the person doing the work so there are no surprises.

Estimates are done on Friday or Saturday, Monday-Thursday we are out doing the work.  All of our estimates are free and your price will not change, unless you ask for additional work to be done that is not on the original estimate that was given.  On jobs where there is some grey area concerning the amount of work to be done, we will occasionally give people a range (for example, $520-$670) with the final price to be determined after the work is completed.  On estimates like this, however, the highest bid number will never be exceeded.

Yes, we do!  If your concrete has a void, cavity or empty space under it, but has not yet sunk, one of the best things you can do is get that void filled.  This way you will get a solid support underneath it to insure that it does not sink in the future.

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