Filling Void Under Concrete Porch

These are often pinned to the foundation wall with rebar.

Filling void under concrete porch.

I wouldn t want them to get stuck under there if i pour concrete. Another option is to find out if there is a company that can pump sand under the porch. A typical void fill application for a residential job would be under a front entry. Filling a massive void under a back patio in columbia missouri.

Step 1 drill at least four holes through the slab at a point that s centered on the void beneath. Patch up the holes with concrete and your new driveway or sidewalk or walkway will look good as new. If it is you will need to fill the void or the concrete will start to break apart and settle. The gap is about 42 l x 3 1 4 w.

Filling hollows under a concrete floor is done through a process called slabjacking. The hole is on the bottom of the porch where the grass and porch meet. The foam will fill up the parts of the concrete that are uneven and will raise it to the proper height. That would not be good news at all.

One expensive option is to tear out the concrete and re pack the area with sand and then pour a new 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. After the geolift has done its magical work the last thing left to do is patching up the holes. The void is under the concrete slab or foundation.

Slabjacking is used to prevent everything from porch floors to patios and basement floors from shifting.