Serving Corvallis, OR and surrounding areas. (541) 230-2883
A sunken driveway, settled patio, or dropping walkway gets worse every wet season. We lift sunken concrete in Corvallis back to level using mudjacking or foam injection - and we tell you exactly what caused the problem so it does not come back.
Foundation raising in Corvallis involves pumping material underneath a sunken concrete slab - through small holes drilled through the surface - to fill the void below and push the concrete back to its original level position. Most residential jobs take one day or less, and you can walk on the repaired surface the same day or the following morning depending on the method used.
The biggest factor in whether a foundation raising repair lasts is what caused the slab to sink in the first place. In Corvallis, the answer is almost always drainage. The Willamette Valley clay soil expands during wet winters and contracts in dry summers, and when water is allowed to pool near a slab or run underneath it, the soil erodes and the slab drops. A repair that does not address the drainage will fail again - usually within a few seasons.
If your slab has cracked enough that raising will not hold, or if you are working on a new concrete surface altogether, our slab foundation building service covers new slab pours designed for Corvallis soil and drainage conditions from the ground up.
Stand at the edge of your driveway, patio, or front walkway and look along the surface. If one section is noticeably lower than the rest - even by an inch or two - the soil underneath has shifted. In Corvallis, this often happens after a wet winter when clay soils have expanded and then dried out, leaving voids beneath the slab.
After a heavy Corvallis rainstorm, notice where water collects. If it puddles against your foundation, near your garage slab, or along your driveway, that water is slowly eroding the soil underneath. Left alone, this leads to more sinking - and the wetter the winter, the faster the damage adds up.
If you notice an uneven step or a catch between two sections of concrete - something that grabs your foot as you walk - one section has moved relative to the other. This is especially common at the joint between a driveway and a garage floor, or between a front walk and a porch step.
A growing gap between your porch slab and the house wall, or between your driveway and the garage floor, means the slab is pulling away as it sinks. In older Corvallis homes with clay-heavy soil, this kind of separation tends to worsen each year if it is not addressed - the gap that looks minor now will be a significant problem in two or three wet seasons.
We offer both mudjacking and polyurethane foam injection for residential slab lifting in Corvallis. Mudjacking has been used for decades and is the more cost-effective option for larger slab sections where the underlying soil is reasonably stable. Foam injection is lighter, cures faster, and leaves smaller holes - making it a better fit for projects where weight is a concern or a quick return to use matters. We also handle proactive void filling for slabs that have not yet dropped but show hollow spots underfoot.
Every foundation raising job includes a drainage assessment. If you also need a new concrete surface rather than lifting an existing one, our concrete cutting service handles the clean removal of damaged sections so replacement work can go in correctly. For homeowners dealing with structural foundation problems rather than slab settling, our slab foundation building team handles full new-pour work throughout Corvallis.
For homeowners looking for a cost-effective solution on larger slabs - like a full driveway section or garage floor - where the soil is reasonably stable and the slab is structurally sound.
For projects where weight is a concern, the repair area is tight, or a fast cure time is important. Foam cures within an hour and weighs less than mudjacking material, reducing load on soft soil.
For slabs that have not yet sunk noticeably but show signs of hollow spots underfoot - proactive filling before a slab drops further, common in Corvallis properties with poor drainage history.
For homeowners who want to understand what caused the settling and what to do about it. Every foundation raising job includes a look at where water flows around your property and what grading or drainage changes could protect the repair.
Corvallis gets around 51 inches of rain per year, most of it falling between October and April. That sustained moisture works into the soil under concrete slabs and slowly erodes the support from below. The Willamette Valley clay soil makes this worse: it swells when wet and contracts when dry, putting constant pressure on slabs from beneath. This cycle repeats every year, and over time it creates the voids that cause driveways, patios, and walkways to sink. Older homes near Oregon State University and in downtown Corvallis are especially affected because the original soil preparation did not account for decades of this seasonal movement. USDA soil survey data for Benton County confirms the high clay content that drives this pattern throughout the Willamette Valley.
If your property is in Albany or Lebanon, the same Willamette Valley clay conditions apply. Homes in those communities see the same seasonal soil movement as Corvallis, and we serve homeowners throughout the mid-valley with the same approach: assess the root cause, lift the slab, manage the water. Getting the repair done before the next rainy season stops the problem from compounding and keeps a manageable job from turning into a full replacement.
When you reach out, we ask a few basic questions - what kind of slab is affected, roughly how much has sunk, and whether you have noticed any cracking. We respond within 1 business day and come prepared with the right equipment for your situation.
A contractor walks the affected area with you, measures the settlement, and probes the soil to understand what is happening underneath. We also look at your drainage - where water flows after rain - because that usually explains why the slab sank. You receive a written estimate before any work is agreed to.
If your project requires a permit from the City of Corvallis Building Division, we handle pulling it before work begins. For most residential slab-lifting jobs, this step is straightforward and adds only a few days. Once permits are confirmed - or confirmed not needed - we schedule the work day.
The crew drills small holes through the concrete and pumps material underneath until the slab rises back to level. You can watch the slab lift in real time. The holes are patched with concrete, the work area is cleaned up, and we walk you through the repair and drainage recommendations before leaving.
We assess the slab, identify the drainage issue, and give you a written estimate before any work begins. No obligation.
(541) 230-2883Most Corvallis slabs sink because of drainage, not just age. We look at where your water is going before recommending a repair method - and we tell you what you can do after the job to keep the slab from settling again. You leave the project with a real understanding of your property.
We offer both mudjacking and polyurethane foam injection, so we can recommend the right tool for your slab rather than defaulting to whatever we only carry. The method that works best for a driveway in the Willamette Valley clay is not always the same one that works best for a garage floor or front porch.
A significant share of Corvallis homes were built between the 1940s and 1970s near Oregon State University and downtown - areas where soil preparation did not account for decades of seasonal movement. We know what to expect in these neighborhoods and price jobs accordingly, with no mid-job surprises. Oregon Department of Geology and Mineral Industries publishes the soil data that shapes how we approach every job in the mid-valley.
If your slab is too far gone for raising to hold, we will tell you - and we will tell you why. We do not push raising jobs on slabs that need replacement any more than we push replacement on slabs that can be lifted. A written estimate before work starts means the number you agreed to is the number you pay.
Every foundation raising job we take on starts with an honest look at what caused the problem, not just what it will take to fix the surface. That approach costs us some jobs where the slab needs replacement instead of lifting - but it means the repairs we do complete hold up through Corvallis winters rather than settling again the following year.
Precision concrete cutting in Corvallis using diamond-tipped saws for drains, doorways, control joints, and section removal with clean, stable edges.
Learn moreNew slab foundation construction in Corvallis for garages, ADUs, and additions - sized and reinforced for Willamette Valley clay soil and seismic loads.
Learn moreCall us or send a message today. Corvallis winters keep coming - getting the repair done now stops a manageable job from turning into a replacement.
