High-Strength Polyurethane Concrete Lifting Foam for Manitoba & Northwestern Ontario
Slab-Jack Kings™ can lift your existing settled concrete for up to 85% less than the cost of removal and replacement!
Slab‑Jack Kings uses exclusive, high‑performance polyurethane foams for concrete lifting, levelling, void filling, and slab stabilization across Manitoba and Northwestern Ontario. Our primary lifting foam is a custom‑engineered 3.5 lb/ft³ material with exceptional compressive strength, designed specifically for our local soil and climate conditions.
Our Exclusive 3.5 lb Hydrophobic Concrete Raising Foam
Our main concrete raising foam is a 3.5 lb/ft³ hydrophobic polyurethane foam formulated for Manitoba and Northwestern Ontario. It is used exclusively by Slab‑Jack Kings in this region, so you are not getting the same generic foam available to local contractors or franchises.
- Custom‑engineered formulation for our soil, moisture, and freeze–thaw conditions
- Hydrophobic and closed‑cell – resists water absorption and washout
- High density with exceptional strength at 3.5 lb/ft³, instead of relying on heavier 4–5 lb foams
- Exclusive supply – this blend is not sold to other contractors in our area
Key Benefits of Our Foam:
- Longer‑lasting repairs – High‑strength foam keeps slabs supported so your repair holds up season after season.
- Less cracking and movement – Filling voids and stabilizing weak soil helps reduce new cracks and separation as the ground moves.
- Minimal disruption to your property – Small injection holes and a clean process mean less mess than traditional mudjacking.
- Virtually no downtime – Most driveways, walkways, and pads are ready for normal use shortly after lifting is complete.
- Lightweight but strong – Adds far less weight to already stressed soils than cement‑based mudjacking mixes, helping prevent future settlement.
Slab-Jack Kings' Foam vs. Local Competitors'
Here is how our exclusive 3.5 lb foam compares to a typical 2.0-2.5 lb “entry‑level” foam commonly used for concrete lifting:
| Feature | Slab-Jack Kings | Local Competitors |
|---|---|---|
| Foam Density | 3.5 lb/ft³ | 2.0–2.5 lb/ft³ |
| Compressive Strength | 100 PSI (free‑rise) | 27-40 PSI (free-rise) |
| Load Capacity | 14,400 lbs/ft² | 4,000-5,760 lbs/ft² |
| Climate Design | Engineered for Manitoba & NW Ontario freeze–thaw cycles | Generic formulas used across many regions |
| Availability | Exclusive to Slab‑Jack Kings in this region | Standard products available to most contractors |
Why Our Foam Is Better Than Our Competitors'
Many concrete lifting contractors use a standard 2.0–2.5 lb/ft³ “residential” concrete lifting foam designed mainly for higher yield and low cost, with compressive strength typically in the 27–40 PSI range. Our custom 3.5 lb foam is engineered to reach 100 PSI compressive strength at just 1 inch of thickness, giving it far greater load‑carrying ability without adding extra weight to the soil.
10-Year Limited Warranty
We stand behind our concrete lifting and levelling work for up to 10 years because the foam we use is engineered to last. Our exclusive 3.5 lb/ft³ polyurethane lifting foam is hydrophobic, closed‑cell, and highly compressive‑strength, so it does not absorb water, wash out, or break down under normal service loads. View full warranty details here.
How Much Weight Can Our Polyurethane Foam Support?
Our high‑compressive‑strength concrete lifting foam is engineered to support very heavy loads without crushing or breaking down, making it ideal for residential, commercial, municipal, agricultural, and industrial concrete lifting and levelling projects.
Weight Capacity of Our Slab Jacking Foam
- 100 PSI compressive strength at just 1 inch of thickness
- At 100 PSI, each square foot of foam can support about 14,400 pounds of evenly distributed load (100 PSI × 144 in²/ft²)
- When confined under a concrete slab, the effective capacity can exceed 25,000 pounds per square foot, depending on in‑place density and confinement conditions
- Where needed, additional foam beneath the slab further increases the total support available
Unlike traditional mudjacking, which adds a heavy slurry to already unstable soil, our polyurethane foam adds very little weight while still providing exceptional load‑bearing strength. This helps stabilize the slab and reduces the risk of future settlement.
Foam Strength vs. Soil Strength
The polyurethane foam we use is much stronger than the soil it sits on. Typical clays and tills in Manitoba can safely support loads in the low thousands of pounds per square foot, while our foam can carry well over ten thousand pounds per square foot when confined under a slab. In other words, the weak link in the system is almost never the foam — it’s the ground itself.
That’s why our focus is not just lifting the concrete, but stabilizing the soil and spreading the load. By filling voids and firming up soft spots, the foam helps distribute the weight of your slab over a wider area so the underlying clay isn’t overstressed. This reduces settlement, minimizes future movement, and helps your repair last longer in Manitoba’s challenging freeze–thaw conditions.
Other Special‑Purpose Foams
While our custom 3.5 lb foam is our primary lifting material, we also have access to a full range of specialized foams for unique applications such as heavy industrial slabs, submerged structures, and long‑distance void filling.
- 4 lb Concrete Raising Foams – For heavy traffic, thick slabs, and commercial/industrial or municipal applications where higher density and stiffness are required.
- Stabilizing and Void‑Filling Foams – Higher‑spread, slower‑reacting foams used to stabilize rocking slabs, fill large voids, or improve sub‑base support where lifting is not the primary goal.
- Hydrophobic Foams for Wet or Submerged Conditions – Specialized formulations for boat ramps, culverts, and locations with active water.
Our Core Polyurethane Injection Services
Residential Concrete Lifting & Levelling
Using high-density polyurethane foam, we lift and level sunken concrete slabs with precision. This method eliminates trip hazards, restores proper drainage, and strengthens the underlying base — all without messy replacement.
Commercial Concrete Lifting & Levelling
Protect your business assets and facility safety with expert commercial concrete repair and concrete lifting. Using precision polyurethane injection, Slab-Jack Kings lifts, levels, and stabilizes sunken, cracked, or compromised slabs in demanding commercial, industrial, municipal, and institutional environments. Explore our full range of concrete repair services across communities in Manitoba and Northwestern Ontario.
Void Filling & Soil Stabilization
Voids beneath concrete can lead to cracking, sinking, and long-term damage. Our void filling process injects foam beneath the slab to fill empty spaces, compact the soil, and stabilize it for years to come.
Underslab Insulation
Our underslab insulation process improves energy efficiency by reducing heat loss through your concrete floor. It’s ideal for garages, basements, and agricultural buildings — and it pairs perfectly with in-floor heating systems.
View all of our Polyurethane Injection Services.
Free Polyurethane Foam Concrete Lifting Estimates!
Stop the threat of tripping or slipping on an uneven or out-of-level, poured concrete slab.
Contact Slab-Jack Kings for an uplifting experience and get your free concrete lifting & levelling estimates today!
Raising Manitoba’s Standards for Settled Concrete Repair, One Slab at a Time.