Family-owned and operated since 2000, Complete Basement Systems (CBS) is proud to be Long Island’s longest-standing basement and crawl space repair company. For more than 25 years, we’ve helped homeowners protect their most valuable investment by preventing water and humidity damage. Our consultative approach sets us apart—we don’t just fix problems, we educate homeowners and deliver tailored solutions designed for lasting peace of mind.
Founded in 1984, PTS Foundation Supply (PTSFS) has been the Northeast’s go-to resource for helical piles, driven anchors, and installation equipment. From design to installation, we know how complex foundation projects can be. That’s why professionals across the region count on our 100+ years of collective experience to provide reliable products, expert insight, and a partnership that helps every project start—and finish—on solid ground.
Since 1973, Premium Technical Services (PTS) has been the Tri-State area’s trusted partner in foundation repair, below-grade waterproofing, and grouting. With more than 50 years of service and over 100 years of combined expertise on our team, we bring proven solutions to keep your foundation strong, dry, and secure for the long run.
Family-owned and operated since 2000, Complete Basement Systems (CBS) is proud to be Long Island’s longest-standing basement and crawl space repair company. For more than 25 years, we’ve helped homeowners protect their most valuable investment by preventing water and humidity damage. Our consultative approach sets us apart—we don’t just fix problems, we educate homeowners and deliver tailored solutions designed for lasting peace of mind.
Founded in 1984, PTS Foundation Supply (PTSFS) has been the Northeast’s go-to resource for helical piles, driven anchors, and installation equipment. From design to installation, we know how complex foundation projects can be. That’s why professionals across the region count on our 100+ years of collective experience to provide reliable products, expert insight, and a partnership that helps every project start—and finish—on solid ground.
Slab Jacking Services for Concrete Leveling & Repair
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Now one team with expanded capabilities. Complete Basement Systems (CBS) and Premium Technical Services (PTS) have combined to deliver a wide range of residential, commercial, industrial, and engineered foundation, waterproofing, and repair solutions.
Premium Technical Systems delivers dependable slab jacking on Long Island and throughout the New York City area - fast, precise repairs for uneven concrete slabs in homes, businesses, and industrial facilities.
Whether you need a settled basement floor lifted back to level or you’re coordinating a time-critical warehouse or office floor correction with minimal downtime, we tailor the right fix to your site, schedule, and budget.
What Is Slab Jacking?
Slab jacking (also called mudjacking) is a concrete repair method that restores settled slabs to their intended elevation without full demolition and replacement. Small holes are drilled through the slab at predetermined points, then technicians pump either a Cement based or urethane based grout. As the voids or empty spaces fill and the underlying soils are densified, controlled pressure gently lifts the slab back into position.
Here's how the process works:
- Assess & grid: We evaluate the extent of settlement, map voids and soft spots, and design a lift plan with precise injection locations.
- Drill holes: Technicians drill holes (typically ranging from 5/8" to 2") at strategic locations to access voids under the sunken concrete.
- Pump & monitor: Low-mobility grout is injected under low pressure in phases. We monitor elevations using lasers and dial indicators to ensure we’re lifting concrete gradually and evenly.
- Finish & patch: When the slab reaches target elevation, injection ports are removed and holes are patched to blend with the existing surface.
Because the slab stays in place and the structure remains accessible, slab jacking is often the fastest way to correct settlement in occupied homes and high-traffic commercial environments.
Typical Causes of Slab Settlement We See in NYC & Long Island
- Soil erosion or consolidation: Water movement (stormwater, high groundwater, or plumbing leaks) undermines support.
- Improper compaction at install: Fill not compacted to spec before the original pour.
- Load changes: New racking, machinery, or forklift traffic increases point loads beyond what the subgrade can carry.
- Freeze–thaw & drainage issues: Seasonal movement and poor surface grading shift support over time.
- Coastal influences: On Long Island and waterfront NYC sites, fluctuating water tables can soften or migrate fine soils.
Understanding these drivers lets us design repairs that last - often pairing slab jacking with strategic soil improvement where needed.
Benefits of Concrete Slab Jacking Over Traditional Slab Replacement
Here's why concrete leveling is a smart investment as an alternative to replacing uneven concrete slabs.
- Save time and cost: Slab jacking costs far less than demolition and pour-back - especially when you factor in disposal, formwork, curing time, and finish restoration. Projects that once took weeks can often be completed in hours or days.
- Minimal disruption: There’s no large-scale demolition, so noise, dust, and vibration are significantly reduced. Doors, racking, conveyors, and sensitive equipment can often remain in place.
- Faster return to service: With no long cure cycles for new concrete, areas can frequently be reopened the same day. That’s crucial for warehouses, retail floors, hospitals, and multifamily common areas where downtime is expensive.
- Precision lifting: Staged injections and real-time elevation monitoring help achieve precise results - ideal for fixing trip hazards, restoring ADA slopes to their original position, and reestablishing drainage pitch.
- Built for occupied interiors: Because crews are small, access requirements are limited, and debris is minimal, slab jacking is well-suited to interior occupied spaces in both residential and commercial buildings.
- Sustainable choice: Rehabilitating existing concrete avoids the carbon and material footprint of full replacement and keeps demolition waste out of landfills.
Address trip hazards: According to the ADA, vertical changes in walking surfaces like sidewalks of more than ¼” are trip hazards. Slab jacking is an effective solution to address liability issues and ensure the safety of guests and customers.
Where Slab Jacking Is Used
Slab jacking excels anywhere settled concrete threatens safety, operations, or asset value.
- Warehouse floor
- Roadway
- Commercial office
- Sidewalk
- Concrete driveway
- Concrete slab foundation
- Patio
- Residential basement
- Residential garage floor
For complex commercial projects or challenging soils (e.g., loose sands, organics, or water-influenced subgrades common around the NYC and Long Island coasts), slab jacking and permeation grouting are often used in tandem to stabilize soils, seal pathways of water migration, and deliver long-term performance.
Concrete Jacking FAQs
Costs vary based on slab thickness, access, number of injection points, required lift, size of void under slab and whether soil stabilization is needed. Residential projects (like a garage bay or basement room) are commonly priced by area and complexity, while commercial pricing may be based on injection grids and production rates. Compared with full tear-out and re-pour, slab jacking often reduces total cost and schedule impact, especially when you account for operational downtime.
Slab jacking is typically one of the most economical ways of leveling concrete, particularly in occupied interiors where demolition and curing time would be disruptive.
A properly executed slab jacking project can provide long-term performance. Longevity depends on:
- Subgrade conditions (soil type, compaction, groundwater influence)
- Drainage and downspout management (surface and subsurface water control)
- Load profile (forklifts, pallet jacks, racking, or vehicular traffic)
- Quality of the lift (grid density, grout properties, monitoring, and staging)
Where soils are loose or water-affected, combining slab jacking with permeation grouting helps lock in results by densifying the matrix around the slab, resisting future settlement and water pathways. Routine facility maintenance, like maintaining joints and ensuring proper drainage, also maximizes service life.
There isn’t a single “best” method for every scenario. The right approach depends on slab thickness, loads, access, soil conditions, water exposure, and your tolerance for downtime.
- Slab jacking (also known as mudjacking): A versatile, cost-effective solution for raising concrete in homes and commercial interiors. Excellent for thick, heavily loaded slabs, where soil densification is desirable, or when precision is crucial. The viscosity of the stone slurry grout can be customized to achieve the desired results.
- Polyurethane foam (polyjacking): This method uses a two-part foam instead of a stone slurry, which is injected beneath the slab. The material fills the voids, and a chemical reaction occurs in seconds to cause rapid expansion. While it has advantages, foam does not allow for the precision of stone slurry; it sets in seconds, and it's very difficult to remove.
- Full replacement: It may be best to replace a slab when it's structurally compromised (e.g., severe cracking from subgrade failure, inadequate reinforcement, or contamination). It’s slower and more disruptive, but sometimes necessary.
Our team evaluates all factors and recommends the method that will deliver the performance, schedule, and budget you need.
Request a Free Inspection & Slab Jacking Estimate Today
Get a fast, no-obligation assessment and clear plan to restore your slab without the mess and downtime of full replacement.
Call 516-409-6000 to request your free inspection and estimate now, and our team will route you to the right specialists: CBS serving property owners on Long Island or PTS providing commercial and industrial solutions throughout the New York metro area.