PolyLevel Injection SystemPolyLevel Injection System..
The PolyLevel Injection System is used to raise a concrete slab.
PolyLevel Injection System.
A small hole is drilled into the slab to be lifted.
PolyLevel Injection System.
An expandable foam is injected under the slab.
PolyLevel Injection System.
As the foam expands, it raises the concrete slab.