Slab-jacking, also called mud-jacking, can usually be done for less than half the cost of pouring new concrete. However, the savings may be even greater, since the costs of demolition, removal and landscaping are eliminated. Most projects can be completed quickly and economically with minimal disruption. Our foundation repair professionals can raise a patio in the morning and you can have your family or guests on it that night! View our service area information.

When you need to raise that slab, slab jacking is a cost-effective alternative to replacing sinking concrete. At Robbins and Co., we use this repair method throughout the Greater Seattle area to fix: sidewalks, streets, ramps, patios, driveways, floors, parking lots, and garage floors–almost anything that’s concrete. It is highly effective in commercial and residential situations.

Since the old concrete is not removed, very little mess or inconvenience is involved. Surrounding sod is not damaged or removed, so there is no need to re-seed and wait for grass to grow, and the newly-raised slabs can be put back into service as soon as the job is finished. You don’t have to wait for the grout to cure!


***View BEFORE and AFTER Pictures***

slabjacking steps

Why Slab-Jacking is Cost Effective

At Robbins and Co., we are sure that slab-jacking is a more cost-effective solution for your Seattle area home when you need to raise that slab, rather than having the entire surface dug up and replaced. It’s fast, not very messy, and it’s a much more effective solution to sinking concrete.

slab jackingInstead of replacing a slab, our unique mixture is pumped under pressure below the slab to restore it to the needed level. This puts a very dense material in under that slab in a liquid form. The chemical change which occurs then solidifies that mixture and restores a very dense material which cannot be compressed like the original soil.

As you do not have to raise the slab and fill the area needed, or break up and replace the slab, this allows you to inexpensively produce a quicker result that can be even more permanent than the original construction work.

There is no need to disturb the surrounding area with other construction equipment or movement. Our mixture is pumped in from the street or driveway area through long hoses so your landscaping is not disturbed.

 ***View BEFORE and AFTER Pictures***

quotation marks“The work done lifting our front porch using your slabjack technology was a great success.

Thanks so much.” ~ Bud C. Bothell, WA


Causes of Sinking Slabs

Like foundations, slabs settle due to:

  • Moisture and its effects
  • Fill dirt used during original construction

Moisture can allow soils to compact and shift below your concrete slab. Too much water unequally drained will allow one side to compress the soil more than other areas. Also, this water in your soil during a freeze can “heave” your slab higher, then drop it as the moisture evaporates or wicks away.

Oftentimes, fill soil (composed of sand or gravel) may not have been compacted adequately before the concrete was laid. Over time, both pressure from the slab weight and the presence or absence of moisture can allow this soil to become more compressed. Fill soil might also have been composed of different materials, such as the original clay soil, and topsoil or sand used to fill low areas. Burrowing rodents or other animals can remove material, which removes the support soil.

Slab-jacking is not used to re-level homes or replace any needed foundation repairs. It is designed with smaller slabs in mind. You’ll need an inspection and estimate to determine whether you need slab-jacking or another solution.

Contact us for a free consultation and estimate. We can take care of any kind of structural problem you may have.