CONCRETE GARAGE FLOOR RAISING
The garage floor is a large slab of concrete. This means that over time it is very susceptible to sinking and possibly cracking. The soil under your garage floor can shift over the years, shrinking and expanding, causing voids to form which the slab will start to sink into. This sinking is what causes the floor to have low spots or even cracks. You may also notice gaps under your garage door which will allow air and water to pass under the door.
If you allow the damage to your garage floor to stay or even get worse over time, it can create hazards to anyone walking. Large cracks will not get any better over time and can accelerate the damage by allowing excess moisture to continue eroding the soil below.