Filling Void Under Concrete Porch

A typical void fill application for a residential job would be under a front entry.

Filling void under concrete porch.

Patch up the holes with concrete and your new driveway or sidewalk or walkway will look good as new. Also what would be the best way to get all the animals out of there. If it is you will need to fill the void or the concrete will start to break apart and settle. Step 1 drill at least four holes through the slab at a point that s centered on the void beneath.

I wouldn t want them to get stuck under there if i pour concrete. After the geolift has done its magical work the last thing left to do is patching up the holes. Filling hollows under a concrete floor is done through a process called slabjacking. Filling the voids is a matter of accessing the void through the slab and then using a pump to place a concrete based fill material into the open space.

The hole is on the bottom of the porch where the grass and porch meet. The void is under the concrete slab or foundation. What s the best way to fill this gap. That would not be good news at all.

Another option is to find out if there is a company that can pump sand under the porch. Because fill dirt is often used around the foundation and again because gutters are often not installed on new construction or downspouts are mis placed the fill dirt becomes saturated with water. The gap is about 42 l x 3 1 4 w. The foam will fill up the parts of the concrete that are uneven and will raise it to the proper height.

These are often pinned to the foundation wall with rebar.