![Sealed Joints and Cracks](https://cdn.treehouseinternetgroup.com/uploads/photo_gallery/medium/478156-a5.jpeg?v=1691084059)
Sealed Joints and Cracks
After the concrete slab was lifted and level with PolyLEVEL, we used NexusPro Crack Repair to seal the joints and cracks.
![Before Sealant](https://cdn.treehouseinternetgroup.com/uploads/photo_gallery/medium/478157-b1.jpeg?v=1691084059)
Before Sealant
These cracks aren't just unsightly; they offer moisture a way to seep beneath the slab
![Uneven Concrete](https://cdn.treehouseinternetgroup.com/uploads/photo_gallery/medium/478158-b3.jpeg?v=1691084059)
Uneven Concrete
Before PolyLevel is injected into the concrete slab.
![Level Concrete](https://cdn.treehouseinternetgroup.com/uploads/photo_gallery/medium/478159-a4.jpeg?v=1691084059)
Level Concrete
The PolyLevel injected raised this concrete about 2 inches!
![Sunken Concrete](https://cdn.treehouseinternetgroup.com/uploads/photo_gallery/medium/478160-b2.jpeg?v=1691084059)
Sunken Concrete
The stability of any concrete surface is dependent on the soils beneath it. The weight of concrete and what it supports, combined with natural soil erosion, can lead to sunken and uneven concrete surfaces.