![Before Concrete Raising](https://cdn.treehouseinternetgroup.com/uploads/photo_gallery/medium/265089-5e935af29bd52_pre-production-1566563607.jpg?v=1586713946)
Before Concrete Raising
Concrete Repair Specialist, Jeff, measured multiple slabs had settled between half an inch to three inches.
![Small Hazards](https://cdn.treehouseinternetgroup.com/uploads/photo_gallery/medium/265090-5e935af505337_pre-production-1566563589.jpg?v=1586713946)
Small Hazards
Small trip hazards formed around the pool area from the concrete slabs sinking and settling.
![Installation](https://cdn.treehouseinternetgroup.com/uploads/photo_gallery/medium/265091-5e935af7b6132_production-img20190925133532.jpg?v=1586713946)
Installation
Our crew drilled small penny-size holes into the concrete and injected a waterproof and environmentally friendly foam known as PolyLevel, underneath.
![After](https://cdn.treehouseinternetgroup.com/uploads/photo_gallery/medium/265088-5e935af04031f_production-img20190925133555.jpg?v=1586713946)
After
The PolyLevel foam expands underneath the slab, lifting it back to level. Once the slab is raised, the PolyLevel foam begins to harden permanently stabilizing the concrete.