The sooner you identify issues the better, so have a professional out if you are concerned. Look out for wide cracks where one side is higher than the other, as this may indicate more serious settlement issues. This can naturally cause cracks to form and settlement may occur in corners of the garage. This greatly increases your risk of flooding.ĭepending on the layout of your garage, different areas will undergo a lot more pressure due to the weight of vehicle tires. Unfortunately, this collection of water leads to greater problems, including the potential for sections of your garage to sink below others. Ultimately, severity depends on crack width and if it continues to grow or not.Īdvanced settlement cracks are open buckets waiting to collect water. Settlement cracks are generally more serious than shrinkage cracks. A little bit of settlement is normal over the years but it can put pressure on garage floors and result in cracks. The soil under your home or building can move and sink over time, a process known as settlement. Natural shrinking occurs during the curing process, so it’s normal for even relatively new concrete to have a couple cracks. ShrinkageĬracks related to shrinkage are typically nothing to worry about and are common. Here’s a look at some of the most common reasons for cracks in garage floors. You can tell if cracks in your garage floor are serious if they have an opening that measures 1/8-inch or more in width, and/or if one side of the crack is higher than the other. After all, one thing is for certain when working with concrete, it is destined to crack at some point. In some cases, cracks are nothing to worry about. Some of the most common reasons for cracks in garage floors are settlement, shrinking, improper installation, and poor drainage.