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Infrastructure Rehabilitation

Concrete Raising with Slabjacking | Serving New England & New York

Concrete slabjacking — also known as concrete raising — uses advanced polyurethane foam injection to lift sunken slabs with precision, speed, and minimal disruption. Serving residential, commercial, and municipal clients throughout Massachusetts, New Hampshire, and New York, EFT delivers durable, cost-effective solutions that outperform traditional replacement methods.
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Understanding Concrete Raising & Slabjacking

Concrete raising is a specialized repair technique used when slabs have settled, tilted, or become uneven due to soil erosion, poor subgrade conditions, or underground utility issues. Strategically drilled access holes allow liquid polyurethane to be injected beneath the slab. As the material expands — up to 900% of its volume — it fills voids and lifts concrete back to level.

Engineered Foundation Technologies (EFT) was the first company in the Northeast region to offer polyurethane slabjacking to both commercial and residential clients, including property managers, businesses, homeowners, engineers, and municipalities.

Polyurethane has become a preferred slabjacking material because of its strength, light weight, and rapid expansion properties — delivering faster, cleaner, and more reliable concrete raising than traditional grouts.

Why Concrete Raising Works

Slabjacking restores structural support from below the slab without breaking up the surface. This minimizes cleanup, reduces downtime, and enhances long-term slab performance — making it ideal for busy facilities and occupied spaces.

Common Causes of Slab Settlement

Subsoil Erosion & Voids

Broken water lines, poor drainage, and groundwater migration can wash away supporting soil, leaving voids that allow slabs to settle.

Poor Soil Bearing Strength

Organic, soft, or poorly compacted soil can fail to support slab weight, leading to uneven surfaces and potential trip hazards.

Heavy Loads & Traffic

Areas exposed to heavy vehicles, equipment, or frequent foot traffic may settle unevenly over time when underlying soils lack adequate strength.

Key Advantages of Concrete Slabjacking

Precision Lifting Technology

Polyurethane foam expands with controlled precision — allowing technicians to raise slabs to exact elevations without over-correction or damage to surrounding structures.

Moisture-Resistant & Long-Lasting

Unlike traditional mudjacking materials that can wash out or degrade, high-density polyurethane foam is completely water-resistant and forms a permanent, stable base beneath the slab.

Lightweight, Structural Strength

Polyurethane weighs only a fraction of cement grout, reducing additional stress on weak soils while still delivering compressive strengths exceeding 100 psi — perfect for heavy traffic or warehouse slabs.

Minimal Drilling, Maximum Efficiency

Access holes are roughly the size of a penny, keeping your slab surface intact and clean while allowing fast injections and short curing times.
Small access holes are drilled in the concrete slab
Projects in Massachusetts and New Hampshire: Small access holes are drilled in the concrete slab. Once the strategically placed holes are drilled, the concrete is raised through injections of liquid urethane. The liquid flows under the concrete and quickly tries to expand to 900% of its volume, ultimately raising the concrete upwards.

Why Choose EFT for Concrete Raising

  • Pioneers of polyurethane slabjacking in the Northeast — proven leadership and experience
  • Residential, commercial & municipal slab repair expertise
  • Fast, minimally disruptive repairs that protect ongoing operations
  • High-strength, lightweight polyurethane technology
  • Cost-effective alternative to slab removal & replacement
  • Licensed, insured, and committed to quality workmanship

Testimonials

Quick & Clean Concrete Raising

"Our settlement issue was lifted fast and with almost no mess. EFT’s slabjacking team had us back up and running that same day."
Kevin, Facility Manager, Springfield, MA

Cost Savings Over Replacement

"Compared to a full slab replacement, slabjacking saved us time and money — and the results look better than new."
Andrea, Commercial Property Owner, Hartford, CT

Professional & Reliable

"EFT explained the slabjacking process clearly and delivered exactly what they promised — no disruption, no dust, and excellent performance."
Mark J., Homeowner, Salem, NH