An issue many homeowners face is a poorly sealing garage door bottom seal for an uneven floor. When this happens, you can see a gap under the seal of your garage door. This problem often leads to cold drafts, pests, and water leaks, affecting the comfort and security of your garage. But take a closer look, the issue might not lie with your garage door or its seal. Instead, the culprit is often the sunken, settled concrete creating a “smile” shape on your garage floor.