​Your garage door is the largest moving part in your home and one of the most used. Yet, it is often the most overlooked when it comes to regular maintenance. A well-maintained garage door does more than open and close smoothly. It protects your home’s security, improves energy efficiency, and helps you avoid costly emergency repairs. At Sentry Garage Doors, we have seen firsthand how simple, routine maintenance can add years to a garage door system’s lifespan. This professional-grade checklist gives homeowners a clear, safe, and effective way to keep their garage doors performing at their best all year round.