Fill the hollow spaces under your slabs before they crack.
Heavy rain, sandy soil, leaking downspouts and irrigation can wash soil out from under concrete. The slab may look fine until it cracks or drops. We fill those empty spaces with foam so the slab is fully supported again.
What's going on under the slab
Voids don't always show from the top. These are the clues we look for.
- The slab sounds hollow when you tap it
- Sand or soil washing out along the edges
- Water disappearing under the slab after rain
- New cracks in a slab that used to be solid
- A downspout or sprinkler soaking the ground next to the slab
- A soft dip in the ground right beside the concrete
Find it, fill it, stop it coming back.
Find the void
We sound the slab, check the edges and drill small test holes where needed to see how big the empty space is.
Fill it with foam
Foam expands to fill the space and supports the slab. If the slab has dropped, we can lift it back to level at the same time.
Point out the cause
If a downspout, sprinkler or leak is washing the soil away, we'll show you so you can fix it and the problem doesn't come back.
Void fill questions
What if the problem goes deeper than the slab?
We'll find out. We sound the slab and drill test holes, and our engineers assess deeper soil problems and plan the right repair.
Why fill a void if the slab hasn't cracked yet?
An unsupported slab is carrying weight over empty space. Filling it early usually costs less than lifting or replacing a slab after it breaks.
Will the foam wash out too?
No. Cured foam is solid and doesn't dissolve or wash away like sand or mud slurry.