Concrete Leveling Seattle | Expert Slab Jacking Services
By Maxim Derkachev
Have you noticed your sidewalk, patio, or driveway becoming uneven and hazardous?
Uneven concrete isn’t just an eyesore — it can create dangerous trip hazards, reduce your property value, and lead to bigger structural problems if left unchecked.
Concrete leveling, also called slab jacking, is the smart, cost-effective alternative to full concrete replacement. By lifting and stabilizing existing slabs, you can restore safety, function, and curb appeal — all without the mess and expense of tearing out and re-pouring concrete.
In this guide, we’ll walk you through everything Seattle homeowners and property managers need to know about concrete leveling — from how it works to when you need it. At Seattle Slab Jack, we specialize in high-tech polyurethane slab jacking that delivers fast, lasting results across the Puget Sound region.
What is Concrete Leveling and Why Does It Matter?
Concrete leveling is the process of lifting and stabilizing sunken or uneven concrete slabs so they return to their original, level position. Instead of replacing an entire slab, we inject a structural material beneath it to fill voids, compact loose soil, and restore stability.
Benefits of Concrete Leveling:
- Safety: Removes dangerous trip hazards and uneven surfaces.
- Cost-Effective: Typically 50–70% less expensive than concrete replacement.
- Fast & Clean: Most projects are completed in hours, not days, with minimal mess.
- Durable: Our geotechnical polyurethane foam is designed to last for years.
- Eco-Friendly: Keeps existing concrete out of landfills and minimizes material waste.
Common Problems We Solve: Signs You Need Concrete Leveling in Seattle
Seattle’s unique mix of heavy rainfall, clay-rich soils, and freeze-thaw cycles makes concrete settlement a common issue. Here are the most frequent situations where we help:
- Uneven Sidewalks & Walkways – Eliminates hazards for pedestrians.
- Sunken Driveways – Restores smooth vehicle access.
- Cracked & Unlevel Patios – Improves outdoor living spaces.
- Sinking Porch Steps – Prevents further settling and unsafe entryways.
- Uneven Pool Decks – Creates a safe, attractive perimeter around pools.
- Hollow Voids Under Concrete Slabs – Prevents collapse and water damage.
Our Advanced Solution: Polyurethane Concrete Leveling (Polyjacking)
At Seattle Slab Jack, we use polyurethane foam injection — the most advanced and durable method for concrete lifting.
How It Works:
- Drill: Small, dime-sized holes are drilled into the slab.
- Pump: High-density structural polyurethane foam is injected underneath.
- Lift: The foam expands, precisely raising the slab back into position.
- Patch: Holes are sealed, blending seamlessly with your existing concrete.
Why Polyjacking Beats Mudjacking:
| Feature | Polyurethane Leveling | Traditional Mudjacking |
| Hole Size | ~5/8 inch | 1–2 inches |
| Material Weight | Lightweight | Heavy slurry |
| Waterproof | Yes | No |
| Cure Time | Minutes | Hours–Days |
| Longevity | 10+ years | Shorter lifespan |
A Smarter Investment Than Concrete Replacement
Here’s how polyurethane leveling compares to full concrete replacement:
| Factor | Polyurethane Leveling | Concrete Replacement |
| Cost | 50–70% less | Full replacement cost |
| Time | Hours | Days to weeks |
| Disruption | Minimal | Major disruption |
| Environmental | Reuses existing materials | Sends old slabs to landfill |
| Longevity | Long-lasting when maintained | Long-lasting but costly upfront |
FAQ: Your Concrete Leveling Questions Answered
How much does concrete leveling cost in Seattle?
Costs depend on the size of the area, severity of settlement, and accessibility. Most homeowners save significantly compared to replacement, often by 50–70%.
Is concrete leveling a permanent solution?
Our polyurethane method is engineered for long-term stability. It’s waterproof, won’t wash out, and addresses underlying soil voids.
How long does the process take?
Most residential jobs are completed in just a few hours.
Can I use my driveway or patio right away?
Yes — polyurethane foam cures within minutes, so your concrete is ready for use the same day.
Is your work guaranteed?
Yes. We back our work with a solid warranty for peace of mind.
Why Choose Seattle Slab Jack?
- Local Seattle Experts – We understand Puget Sound soils and weather.
- Cutting-Edge Technology – We use premium geotechnical polyurethane.
- Transparent Pricing – Free, no-obligation estimates.
- Licensed & Insured – Professional, safe, and compliant work.
- Proven Reputation – Highly rated by homeowners and municipalities.
Ready to Restore Your Concrete? Get Your Free Estimate Today!
Don’t wait for uneven concrete to become a safety hazard or costly liability. Seattle Slab Jack serves Seattle and the surrounding 30-mile radius, providing the most advanced concrete leveling solutions available.