You might have a sinking garage floor if you notice doors are not opening easily or concrete slabs are cracking. If your water is pooling in one area, it can't escape and can cause flooding problems. This is not only costly but the ground around your garage could also become saturated with water, which leads to all kinds of issues. When it comes to garage slab repair, the sooner you take care of your problem, the better. A sinking garage floor can cause many different issues. It can lead to water damage and other structural damages. If not dealt with in a timely manner, the foundation of your house may be compromised and result in costly repairs.