Concrete Lifting & Leveling in Boise and the Treasure Valley

What Concrete Lifting Is

Polyurethane lifting raises settled concrete back to its original grade without breaking it out and re-pouring. We drill access holes the diameter of a penny, inject expanding polyurethane foam under the slab, and the foam fills voids, compacts loose soil, and lifts the slab back to level. We patch the access holes with a color-matched concrete fill once the lift is set.

The work is fast and clean. A residential driveway, sidewalk, or patio lift takes a single day. You can walk on the slab within minutes and drive on it inside 15 minutes. Replacement concrete needs several days of cure time before any traffic.

Why Concrete Sinks in the Treasure Valley

Boise, Meridian, Eagle, Nampa, and Caldwell sit on a mix of clay-bound soils and caliche hardpan. These soils behave differently than the well-draining sandy ground most residential concrete is poured on. When water moves through Treasure Valley soil from snowmelt, irrigation, downspout discharge, or seasonal rain, the water can wash fine soil out from under a slab, compress loose fill that was never properly compacted, or saturate clay until it loses support strength.

The slab loses its support across part of its footprint. Gravity does the rest. Over weeks, months, or years the slab tilts, drops, or cracks.

We see this most often in Boise Bench homes built before improved drainage standards, newer Meridian and Star subdivisions where backfill compaction was rushed, foothill-adjacent Eagle homes where lateral runoff concentrates against the lot, and Nampa or Caldwell properties on legacy agricultural soil. The pattern is regional. The cause is always the same: water moved soil.

Why Hiring a Drainage Contractor for Concrete Lifting Matters

Most concrete lifting companies will lift your slab and leave. The lift holds for a season or a few years, and then the same water that moved the soil the first time moves it again. The slab settles a second time. You pay twice.

We are a drainage contractor that also lifts concrete. When we inspect a settled slab, we walk the exterior to find what moved the soil. The cause is one of three things most of the time: a downspout discharging directly against the slab, yard grading that channels runoff under the concrete, or an irrigation line or canal that has been saturating the subsoil for years. We document the cause, lift the concrete, and recommend the drainage fix as part of the same scope. That sequence is why our lifts hold.

If the drainage cause has already been addressed, we will tell you and do the lift on its own. If the drainage cause is still active, lifting the slab without addressing it gives you a temporary fix.

Surfaces We Lift

Polyurethane lifting works on most flat residential and light-commercial slabs. We lift:

• Driveways. The most common lift we do. Sunken sections, drops at the garage apron, and slabs sloping toward the house instead of away.
• Sidewalks and walkways. Settled panels that have created trip hazards, raised lips, or drainage bottlenecks.
• Patios. Outdoor living areas where the slab has dropped, sloped toward the house, or developed a step-down where it meets the door threshold.
• Garage floors and garage aprons. Settled garage slabs, dropped aprons, and the bump that develops at the garage door transition.
• Concrete steps and stoops. Front steps that have pulled away from the porch or settled below the original grade.
• Commercial slabs. Entryways, walkways, parking lot panels, and trip-hazard repair for property managers and HOAs.
• Void filling and slab stabilization. Slabs that are not visibly sunken but sound hollow underfoot, rock when stepped on, or sit above documented voids. The same poly foam fills the void and stabilizes the support without lifting if the slab is still at grade.

We do not lift pool decks. The combination of pool chemistry, expansion-joint detail around pool coping, and the structural specifics of pool decks puts that work outside our current scope. Every other residential and commercial lifting application is in scope.

Polyurethane Foam vs. Mudjacking

Older concrete lifting was almost always done with mudjacking, a slurry of cement, sand, and water pumped under the slab to raise it. Mudjacking still works. Polyurethane foam injection is a better fit for Treasure Valley conditions for several reasons.

Mudjacking uses access holes about two inches across. The slurry is heavy and adds permanent weight to soil that already failed to support the slab. The cure time keeps you off the slab for a day or more. Polyurethane uses penny-sized holes, weighs a fraction of mudjacking slurry, expands to fill voids without overloading the soil, and cures in minutes.

Treasure Valley clay soils already struggle with subgrade weight. Freeze-thaw cycles punish heavier subgrade additions. Most homeowners want the driveway or sidewalk back the same day. Polyurethane is the better answer for all three reasons. We run polyurethane only.

Pricing: About Half the Cost of Replacement

The clearest pricing frame for concrete lifting is the comparison to replacement. Replacing a residential driveway, patio, or sidewalk means breaking out the existing slab, hauling debris, prepping subgrade, forming, pouring, finishing, and curing. The labor, materials, and time put replacement in a higher cost bracket than lifting almost every time.

Concrete lifting runs about half the cost of replacement on the same slab. The exact ratio depends on slab size, void depth, and access. For homeowners and property managers comparing the two paths, lifting wins on price when the slab is structurally sound and needs to come back to grade.

Every lifting project gets a free written estimate. The estimate documents what we are lifting, the method, the warranty, and any drainage correction we recommend addressing in the same scope. We do not add line items after the work is done.

Our Lifting Process

Every project follows the same sequence whether we are raising a single sidewalk panel or a full driveway:

1. Inspection. We measure the existing grade, document the settlement, identify the suspected drainage cause, and walk you through what the lift will and will not change.
2. Estimate and scope. Free, written, and clear about what is included.
3. Drilling. Penny-sized access holes go in pattern across the slab where lift is needed.
4. Injection. Polyurethane foam goes in under controlled pressure. The foam expands, fills voids, compacts loose soil, and lifts the slab to grade.
5. Lift monitoring. We monitor lift height in real time and stop at the target grade. Inexperienced crews over-lift. We do not.
6. Patching. Access holes get filled with a color-matched concrete patch.
7. Drainage recommendations. If the inspection found an active drainage cause, we walk you through the recommended correction so the lift is not undone in two seasons.

Most residential projects wrap in a single day. Foot traffic is fine within minutes. Vehicle traffic within 15 minutes.

Our 5-Year Warranty

Every concrete lifting project we do is backed by a 5-year warranty. If a slab we lifted settles back below the lifted grade because of a failure of our material or installation within five years, we come back and re-lift at no charge.

The warranty covers the lifted slab and the lifting work itself. It does not cover settlement caused by a brand-new drainage failure that was not present at the original lift. Examples include a downspout that fell off two years later, a new irrigation line break, or a new adjacent excavation. That distinction is why we recommend drainage correction at the time of the lift. The drainage condition at lift time is what the warranty is anchored to.

When Concrete Lifting Is Not the Right Answer

We turn down lifting jobs when the slab is structurally compromised in a way that lifting will not fix:

• Severely cracked or broken slabs. Concrete in multiple pieces or with structural cracks running through the lift zone can be raised, but the slab integrity is gone. Replacement is the right answer.
• Crumbling or spalled surfaces. If the top of the concrete is flaking or breaking apart, the slab itself is failing. Lifting solves the grade. It does not solve the surface.
• Slabs over still-active deep voids. If the underlying void is too deep, too wide, or fed by ongoing erosion that cannot be stopped, the lift will not hold. We document the situation and recommend the right path forward, even if that path is replacement.

We tell homeowners and property managers when a project is or is not a good lifting candidate. Selling a lift that fails in a year does not serve you, and it does not serve us.