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No, there should not be a gap between your garage door and the floor. Gaps can make your garage less energy efficient, leading to higher energy bills. They also create an entry point for pests like rodents and insects, as well as rain and melted snow, which can lead to foundation damage or mold issues.

If you have a gap under your garage door, potential causes include an uneven garage floor or worn-out weather stripping. To fix it, you can try several solutions:

• Replace the weather stripping: The seal at the bottom of the door may need to be replaced.

• Adjust the garage door: You may be able to adjust the closing position on your garage door opener to eliminate the gap.

• Inspect the floor: If the concrete floor has shifted or is uneven, it may need to be repaired to create a level surface.

If these solutions do not resolve the issue, it is best to call a garage door repair specialist to inspect the door and floor.

The most affordable way to insulate a garage involves choosing cost-effective materials like fiberglass, which comes in batts or rolls and is relatively easy to install. You can often install this type of insulation without needing to add drywall, which helps reduce costs. While a DIY approach might seem cheapest, hiring a professional installer can be highly cost-effective. Experts can accurately determine your garage's specific insulation needs and ensure the best results for your investment, often using batt insulation for the bulk of the project.

You can expect your seal to last anywhere from 1 to 5 years. Several factors affect this—material, frequency of use, and the weather. For example, seals made from high-quality rubber are built to withstand the elements and can go the distance with a little TLC. If your door sees a lot of action or faces extreme heat or cold, the seal could wear out more quickly. Regular maintenance—like cleaning and lubrication—can make your seal last longer. And while it’s rare, a professionally installed seal on a smooth floor can potentially last up to 10 years.

The best way to maintain a garage door and avoid issues is to hire someone to do a garage door tune-up, check the remote opener, and service the main system components, like the springs, chains, and track. Schedule maintenance service once every two years for $100 to $200. You can also DIY garage door maintenance, like washing and waxing the door and applying lubricant to hinges and rollers regularly.