How To Fix Erosion Under Concrete Driveway

Your contractor installed the wrong sized gravel along the edge of your driveway.

How to fix erosion under concrete driveway. Connect a hose to a slabjacking pump then run the hose to the holes leading to the void. Shrub and tree roots excel in preventing erosion way better than grass roots. It s just where it always has been. To repair you ll need a form.

For one thing the gravel must be the correct shape. This is a means of filling voids underneath concrete slabs by injecting pumping filler materials into the defective areas. Without the right support concrete will crack sink and cease to be the sturdy solid surface you can count on. Use a drill equipped with a masonry bit to bore.

It s imperative to fix erosion under concrete as soon as possible but first you need to know what to look for. How to fill voids under a concrete slab. Bury an aluminum flashing or redwood or other suitable material a couple of inches deep and about an inch from the concrete edge allowing it to extend above the bottom edge of the concrete approximately an inch. Once you decide to start your driveway erosion repair focus on both the size and shape of the stones you ll use along the edge of your drive.

The driveway hasn t sunk yet. By all means increase the size of the stones. Erosion under concrete is serious whether it s your foundation driveway patio or sidewalk that s affected. There is 2 ways to fix it.

2 by your self with a hammer drill hammer drill bit drop in anchors threaded rod cut to length nuts fender. There are several conventional and alternative void filling materials which can be employed to achieve a similar effect. But if you ve got an area that s sunken in where the driveway is what you are going to have to do is cut that driveway out fill that area in tamp it down pack it properly and have the driveway restored in that particular area. 1 by professionals slab jacking by lifting the concrete that is below the concrete surface and tightly filling the gap.