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Floor repair · Expanding resin
Slab Lift: subsided concrete floors back to level
We inject expanding resin under your floor. It first fills the voids, then compacts the subgrade and lifts the floor in a controlled way. No demolition, no new screed, and usable again after ± 15 minutes.
- Subsided floor with a void underneath
- The resin fills the void and lifts the floor
- The floor is back to level
When to choose it
- Subsided garage, warehouse or industrial floors
- Hollow sound or rocking floor slabs
- Steps at the joints, dangerous for forklifts
- Floors on poorly compacted fill
- Production cannot stop for long
How it works
How we work
- 01
Survey
We measure the floor and find where and by how much it has subsided.
- 02
Drilling
Every 1 to 2 m we drill holes of 12 mm in the floor.
- 03
Injection and lift
The resin fills the voids, compacts the subgrade and lifts the floor under continuous laser control.
- 04
Finishing
We seal the holes. After ± 15 minutes the resin reaches 90% of its final strength: the floor can be used again.
Technical data
| Material | Expanding polyurethane resin |
|---|---|
| Drill holes | Ø 12 mm, every 1 to 2 m |
| Density | ± 85 kg/m³, hardly any extra load |
| Curing | 90% of final strength after ± 15 minutes |
| Monitoring | Continuous laser monitoring |
| Environment | Free of CFCs and formaldehyde, allowed in water catchment areas |
Mobile injection unit
Our injection unit stays outside; only the hoses go in. That keeps disruption in your building to a minimum.
See the projectHow far can a floor be lifted?
That depends on the floor and what stands on it. Usually a few millimetres to a few centimetres; we stop as soon as the floor is level.
Can the warehouse stay open?
Yes, we work zone by zone. A treated zone can be used again after ± 15 minutes.
Isn't a new floor better?
A new floor means demolition, weeks of downtime and higher costs. As long as the slab itself is sound, lifting with resin is faster and cheaper.
Does this also work for terraces or driveways?
Yes, we also lift subsided concrete terraces, driveways and outdoor slabs.
Not sure which technique your home needs?
Send us a few photos of the cracks. We visit without obligation and advise the right approach.