Concrete Driveway Lifting in Calgary
FOAMExperts provides concrete driveway lifting in Calgary for settled, uneven, and unsupported driveway slabs. We inject polyurethane foam beneath suitable concrete to fill accessible voids, restore support, and carefully raise low sections.
Before recommending lifting, we inspect the driveway condition, garage elevation, drainage, cracks, and surrounding ground.
Concrete Lifting
Can a Sunken Concrete Driveway Be Lifted?
Yes, many sunken concrete driveways can be lifted when the slabs remain strong enough to move. Polyurethane foam is injected beneath the concrete through small access holes. As it expands, the material fills accessible voids and applies controlled pressure to the slab.
Driveway lifting may help improve:
- A driveway that has dropped below the garage floor
- Uneven joints between concrete sections
- Vehicle impact at raised slab edges
- Water collecting near the garage
- Rocking or hollow driveway slabs
- Gaps beneath exposed edges
- Low sections beside sidewalks or steps
- Poor surface drainage caused by settlement
Concrete lifting does not create a new driveway surface. Existing stains, wear, scaling, and cracks may remain visible after the slabs have been raised.
Applications
Signs Your Concrete Driveway Has Settled
Your driveway may need an assessment when you notice:
- One slab sits lower than the next
- The driveway has dropped near the garage entrance
- Vehicle tires hit a raised joint
- Water pools beside the garage
- Rainwater flows toward the house
- A slab rocks when driven over
- Gaps appear beneath the driveway edge
- Cracks widen around a low section
- The driveway no longer meets the sidewalk evenly
- A garage door seal leaves an uneven gap
These signs do not confirm that lifting is the right repair. The concrete and the support beneath it must first be inspected.
Driveways
Why Concrete Driveways Sink in Calgary
Concrete driveways usually sink after the soil or base beneath them loses support.
Poor Base Preparation
A driveway built over poorly compacted fill may settle as the supporting material compresses.
Freeze-Thaw Movement
Moisture beneath exterior concrete can freeze, expand, and later thaw. Repeated seasonal movement may weaken the base or create gaps beneath the slab.
Water Erosion and Washout
Water from downspouts, poor grading, snowmelt, or leaking pipes can carry supporting soil away from beneath the driveway.
Backfilled Soil Near the Garage
The ground beside a foundation is often disturbed during construction. If the backfill settles, the driveway may drop near the garage.
Utility Trenches
Soil placed over water, gas, sewer, or electrical trenches may settle differently from undisturbed ground.
Heavy Vehicles
Large vehicles, trailers, or equipment can place added pressure on a weak or unsupported driveway base.
Hidden Voids
Underground spaces may develop through erosion, soil movement, animal activity, or previous construction work.
The cause of settlement should be considered before the driveway is lifted. Drainage or ground problems that remain untreated may contribute to future movement.
Polyurethane Injection
How Driveway Lifting Works
Inspect the Driveway
We assess:
- Slab condition
- Cracks and joints
- Garage elevation
- Sidewalk connections
- Drainage direction
- Visible gaps
- Access to the work area
- Nearby landscaping and structures
Measure the Settlement
Elevation differences help determine how far the slabs have moved and whether enough space remains for a controlled lift.
Plan the Injection Points
Small injection holes are positioned according to the slab size, settlement pattern, and likely voids beneath the concrete.
Inject Polyurethane Foam
Polyurethane material is injected beneath the driveway in controlled amounts. The foam expands into accessible spaces and applies upward pressure.
Monitor the Slab Movement
The technician watches the driveway, garage transition, slab joints, and surrounding surfaces while the concrete is raised.
Seal the Injection Holes
The injection points are sealed after the required lifting or stabilization work is complete. The patch colour may not perfectly match the older concrete.
Complete a Final Inspection
We review the finished elevation, visible cracks, slab transitions, drainage direction, and work area.
Concrete Lifting
Can Driveway Slope and Drainage Be Corrected?
Driveway lifting may improve drainage when settlement has caused a low area and the slab has enough room to move. However, not every slope problem can be corrected through lifting alone.
The result depends on:
- Current driveway elevation
- Garage-floor height
- Sidewalk and curb elevations
- Available slab movement
- Drainage direction
- Door and threshold clearance
- Existing cracks
- Nearby concrete
- Original driveway design
Additional drainage work may be required when water problems are caused by downspouts, grading, underground leaks, or an unsuitable original slope.
FOAMExperts should explain what improvement may be possible before work begins rather than promise perfect drainage.
How We Protect Nearby Property Features
Driveway lifting normally requires less excavation than full concrete replacement, but nearby features must still be considered.
Before injection, we review:
- Garage walls and doors
- Sidewalks
- Steps
- Curbs
- Landscaping
- Fences
- Drainage channels
- Utility lines
- Irrigation systems
- Access routes
Equipment and hoses should be positioned to limit unnecessary disturbance. Property-specific access requirements are confirmed before the project is scheduled.
Can a Cracked Concrete Driveway Be Lifted?
Some cracked driveways can be lifted when the individual concrete sections remain strong enough to move.
Lifting may improve the position of the slabs, but it does not remove existing cracks. Cracks may:
- Remain visible
- Close slightly
- Become wider
- Change alignment
- Move as separate slab sections are raised
Severely broken, deteriorated, or unstable driveway concrete may require replacement.
Driveway Lifting vs Replacement
Concrete lifting and driveway replacement address different conditions.
| Consideration | Driveway lifting | Driveway replacement |
| Existing concrete | Keeps suitable slabs | Removes old concrete |
| Demolition | Usually limited | Required |
| Surface appearance | Existing finish remains | New concrete finish |
| Existing cracks | Usually remain visible | Removed with old slabs |
| Excavation | Limited access holes | Full work area |
| Site disruption | Often lower | Usually higher |
| Best suited to | Settled but sound slabs | Broken or deteriorated concrete |
Lifting may be suitable when settlement is the main problem and the driveway remains structurally sound.
Replacement may be better when:
- The slabs are badly broken
- Surface deterioration is extensive
- Reinforcement has failed
- The driveway is too thin or weak
- The required elevation cannot be reached safely
- Underground repairs require excavation
- A completely new finish is wanted
When Can You Drive on the Lifted Surface?
Return-to-use time depends on:
- Polyurethane product
- Amount of material used
- Driveway condition
- Vehicle weight
- Additional crack or joint work
- Project-specific requirements
FOAMExperts provides guidance based on the material and completed application. Do not drive on the surface until the technician confirms it is ready.
How Long Does Driveway Lifting Last?
There is no single lifespan that applies to every driveway.
Long-term performance depends on:
- Cause of settlement
- Drainage
- Soil movement
- Slab condition
- Foam specification
- Vehicle loads
- Nearby construction
- Underground leaks
- Ongoing maintenance
A driveway may settle again if water erosion, weak soil, or another underlying cause continues.
Concrete Driveway Lifting Cost Factors
The cost of lifting a driveway in Calgary depends on:
- Number and size of slabs
- Amount of settlement
- Void size
- Foam volume
- Slab thickness
- Number of injection points
- Garage and sidewalk transitions
- Property access
- Drainage conditions
- Existing cracks
- Additional sealing work
- Project minimum charges
An accurate quote requires photographs, measurements, or an on-site assessment.
FAQ
Concrete Driveway Lifting FAQs
Can every sunken driveway be lifted?
No. The concrete must remain strong enough to move. Severely broken, deteriorated, or structurally affected slabs may need replacement.
Will driveway lifting remove existing cracks?
No. Existing cracks normally remain visible. Their width or alignment may change as the slabs are lifted.
Will the injection holes remain visible?
The holes are sealed after injection. However, the patch colour and texture may not perfectly match the existing driveway.
How long does driveway lifting take?
Project time depends on the driveway size, settlement, access, number of injection points, and lifting requirements.
Can driveway lifting fix water pooling?
It may improve water flow when settlement caused the low area and enough slab movement is available. Other drainage repairs may still be required.
Is driveway lifting cheaper than replacement?
It may cost less than full replacement when the existing slabs remain suitable. The correct option depends on concrete condition, drainage, appearance, and project scope.
Is concrete driveway lifting permanent?
No repair should be described as permanent for every property. Future performance depends on ground conditions, drainage, loading, and whether the cause of settlement has been managed.
Request a Concrete Driveway Assessment
- Property address
- Approximate driveway size
- Number of concrete slabs
- Wide photographs
- Close-ups of uneven joints
- Garage transition
- Visible gaps
- Drainage direction
- Vehicle type
- Access restrictions