Polyjacking Cost in Spokane, WA
Polyjacking — polyurethane foam concrete lifting — is priced by material and access, not slab type. Here's what it actually costs in the Spokane market and why homeowners are choosing it over mudjacking.
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Overview
Why pricing varies.
Polyjacking is the modern term for lifting concrete with polyurethane foam. In Spokane, it's replaced mudjacking as the default residential repair for most sunken driveways, sidewalks, patios, and garage floors. The material is different — a two-part expanding polymer instead of a cement slurry — and so is the pricing model.
Polyjacking is priced primarily by material weight (how much foam a slab needs) plus the labor to drill, inject, monitor, and patch. That means a small lift with a shallow void can be surprisingly affordable, while a large lift over major settlement carries a larger material bill. This guide breaks down what actually moves the number in Spokane.
For the underlying service details, see the concrete leveling page or the concrete leveling overview. Serving Spokane, WA and the surrounding Inland Northwest. Ready to skip to a real number? Request a free estimate.
Factors affecting cost
What actually moves the price.
Foam volume
The single biggest driver. A quarter-inch lift over a small void takes very little material; a two-inch lift over a deep washout can take many times more foam.
Number of injection points
Each port is drilled, injected, monitored, and patched. Larger areas need more ports for even lift, and each one adds a few minutes of crew time.
Slab size
The total surface area affects both foam requirement and port count. A single sidewalk panel is dramatically different from lifting an entire patio.
Access to the slab
Front driveways are straightforward. Fenced backyards, tight gates, or heavily landscaped sites add setup time and, in some cases, hand-carry work.
Soil and void condition
A stable base with a defined void is a clean lift. Loose or washed-out soil can absorb foam and require more material to reach lift.
Amount of settlement
More drop means a longer, more controlled lift and more material. A minor offset is minutes of work; several inches of settlement is a materially different job.
Drainage or downspout correction
Where the root cause is a downspout or grade issue, addressing it as part of the visit adds a small line item but often saves a repeat repair.
Typical Spokane price ranges
What homeowners actually pay.
Estimates only — every real number comes from a free on-site walkthrough of the specific slab.
Small polyjacking repair
$500 – $900
One or two sidewalk panels, small entry pad, or a settled step — minor settlement, easy access.
Typical residential polyjacking
$900 – $2,000
Driveway apron, front walkway run, or partial patio lift with moderate settlement.
Larger residential polyjacking
$2,000 – $3,500
Full driveway, full patio, or garage floor with meaningful settlement across the slab.
Significant polyjacking
$3,500+
Deep voids, multi-surface projects, or slabs where the base itself needs stabilizing along with the lift.
Note: These are homeowner-facing estimates only. Every real project depends on the specific slab, access, and site conditions — the only accurate number comes from a free on-site walkthrough.
Leveling vs. replacement
Cost, time, disruption, and lifespan side by side.
Concrete leveling
- Cost
- Polyjacking: typically 30–60% of full replacement.
- Time on site
- A few hours on site. Same-day return to use.
- Disruption
- Dime-sized injection ports, no demo, no cure time.
- Lifespan
- Water-resistant material, many years with drainage correction.
Concrete replacement
- Cost
- Higher — demo, disposal, forms, rebar, pour, cure.
- Time on site
- Days on site plus additional cure days before use.
- Disruption
- Jackhammers, debris, exposed base, color mismatch.
- Lifespan
- New slab — but the same base issues can drive new settlement.
Polyjacking is designed for slabs that are structurally sound but sitting on a compromised base. If the concrete itself is failing, replacement is the right call — otherwise, polyjacking wins on cost, time, and disruption in almost every Spokane residential scenario. For a deeper walk-through, see concrete leveling vs. replacement in the Learning Center.
Cost drivers
What increases the cost?
Situations that reliably push a project toward the higher end of its price band.
- Larger voids beneath the slab — more foam by weight.
- Difficult access requiring hand-carrying equipment.
- Multiple slabs being lifted in one visit at different elevations.
- Adjacent hardscape (steps, retaining walls) that needs to be monitored during lift.
- Base stabilization above the lift itself.
Save money by repairing early
Can I save money by repairing early?
Yes — and it's not marketing. Concrete settlement is one of the few home problems that gets meaningfully more expensive to fix over time.
- Foam volume follows the void. A small void today is a big void in three years, and the material cost tracks that curve.
- Every inch of additional settlement adds meaningful material — polyjacking rewards early repair more than almost any other slab fix.
- Cracking often follows settlement. A slab that's still structurally intact is a polyjacking candidate; a slab that has cracked through is more often a replacement conversation.
- Water damage compounds. A polyjacking job that includes a downspout redirect is cheaper than the polyjacking job plus the base stabilization plus the drainage fix a few years later.
Frequently asked questions
Pricing questions from Spokane homeowners.
- How much does polyjacking cost per square foot in Spokane?
- Polyjacking is priced by material and access, not by square foot. As a rough sanity check, Spokane residential polyjacking lands in a range of about $6–$25 per square foot depending on lift depth, but any credible quote has to be tied to a specific slab.
- Is polyjacking worth the cost vs. replacing the slab?
- For a structurally sound slab, yes — polyjacking is typically 30–60% of the cost of replacement and finishes in hours instead of days. Replacement wins only when the concrete itself has failed.
- How much cheaper is polyjacking than mudjacking?
- Per-job costs are often similar. Polyjacking's real advantage is longevity — foam is water-resistant and doesn't wash out, so the lifetime cost is usually lower even when the up-front number is comparable.
- Does polyjacking have hidden costs?
- Not on our estimates — the written scope covers material, labor, port patching, and cleanup. Drainage correction (if recommended) is a separate itemized line, not a surprise.
- Do you offer free polyjacking estimates?
- Yes. On-site walkthroughs are free with no obligation. You get a written, itemized estimate the same visit or shortly after.
- How long does polyjacking last in the Spokane climate?
- Polyurethane foam is a stable, water-resistant material — it doesn't wash out and holds up to freeze-thaw. When drainage is corrected at the same time, most residential polyjacking lasts many years.
- Can polyjacking fail?
- Polyjacking failures usually trace back to a base issue that wasn't addressed — an unfixed downspout, a washout under the slab that keeps eroding. That's why we look at drainage during every walkthrough.
- Is polyjacking safe around utilities?
- Yes. Foam expands within controlled pressures. We locate utilities before drilling injection ports, and the lift is monitored in real time.
- How soon can I use the surface after polyjacking?
- Same day, in most cases within an hour or two of the injection. Full material cure continues after, but working strength is reached quickly.
From the Learning Center
Related reading before you request an estimate.
Get a real number
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Ranges are useful. A real number is better. We come out, walk the slab, measure the settlement, and put an itemized number in writing — no obligation.
Lift it — don't replace it.
Have questions about your concrete? Need advice? Want a free estimate? We're here to help. Concrete leveling saves the slab you already have, at a fraction of the cost of replacement.
- Often less costly and less disruptive than tear-out and replacement
- Repair before replacement when appropriate
- Modern concrete lifting methods
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