Poly Foam Concrete Lifting: A Long Island Homeowner's Guide

A sunken driveway, a pulled-away stoop, or a warehouse floor that pools water doesn't need to be torn out. Modern polyurethane foam lifting can restore concrete to grade in hours — and for a fraction of replacement cost.

How poly foam lifting works

The process is simpler than it sounds:

1. We drill dime-sized access holes through the sunken concrete
2. Through each hole, we inject structural polyurethane foam
3. The foam expands and fills the voids beneath the slab
4. As expansion continues, the foam lifts the concrete precisely to grade
5. The foam cures in 15 minutes and holds indefinitely
6. We patch the access holes to match the concrete

Total time for a typical driveway: 2–4 hours. You can drive on it the same day.

Why it's replaced mudjacking

Mudjacking was the old answer — pumping a slurry of mud, sand, and cement under concrete to lift it. It worked, but had real downsides:

MudjackingPoly Foam~100 lbs per cubic foot~2-4 lbs per cubic foot (10× lighter)Coin-sized access holesDime-sized access holes24–72 hour cure15 minute cureCan wash out in waterImpervious to waterAdds weight to already-unstable soilMinimal added load

On Long Island, the won't-wash-out property matters a lot. After a coastal storm, mudjacked slabs can re-settle. Poly foam doesn't.

What can be lifted

• Driveways — most common. Concrete and asphalt both work.
• Stoops and front steps — especially when pulled away from the house.
• Walkways and sidewalks — trip hazards fixed same-day.
• Pool decks — lifting prevents cracking around pools.
• Garage floors — when corners or sections have settled.
• Warehouse and commercial slabs — minimal downtime, no production disruption.
• Patios — can restore pitch for proper drainage.

What it costs on Long Island

Pricing varies with square footage, number of access points, and amount of lift needed. Typical ranges:

• Small stoop lift: $500–$1,200
• Residential driveway: $1,500–$4,500
• Large pool deck: $2,500–$6,000
• Commercial warehouse section: $3,000–$12,000+

For context: a full tear-out and repour of a residential driveway on Long Island typically runs $8,000–$25,000. Poly foam lifting usually costs 30–50% of replacement.

When poly foam isn't the answer

We're honest with homeowners about when lifting isn't the right fix:

• Severely cracked slabs — if the concrete is fractured into multiple pieces, lifting won't reassemble it. Replacement is the answer.
• Surface damage — spalling, surface crumbling. Lifting doesn't address the top surface.
• Active erosion — if the underlying soil is actively washing away (drainage issue), fix the drainage first. Otherwise the slab will re-settle.

If we can lift it, we will. If it needs replacement, we'll tell you — and we'll tell you why.

Why it's popular across Long Island

On the North Shore, clay expansion and contraction settles slabs. On the South Shore, sandy soil erodes under them. Commercial and industrial areas (Hauppauge, Farmingdale, Melville) have warehouse floors that can't afford tear-out downtime. Poly foam works for all of them.

See our full concrete lifting service or schedule a free inspection.

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