A cracked slab foundation repair doesn’t necessarily mean your home is in trouble, but it should be looked at by an expert. If you’re concerned, there are ways to get the help you need that won’t cost you an arm and a leg.
First, evaluate the crack size and direction. A single crack that’s a few inches wide isn’t usually a big deal if the soil under it is well-compacted and not expansive, but if the crack goes around the perimeter of your house it could be an indicator of extensive movement in the rest of your foundation.
Another way to evaluate a crack is to look at whether it admits water. Cracks that admit water need to be dealt with as soon as possible and it’s best to use a low-pressure injection using epoxy or polyurethane foam. Cracks that are continually active may be more concerning and should be monitored over time.
A common problem with concrete is that it can be damaged by excessive weight, which is often the case when you install a pool or a new patio. If the weight of these items exceeds the load-bearing capacity of your slab, it can cause fine cracks called crazing. These types of cracks aren’t serious and don’t require advanced repair. Cracks that are parallel to the joints in your concrete foundation, however, may be indicative of other issues. These include an uneven seat for the slab, invasive pressure from tree roots, and previous foundations that were not removed.