Painting an aluminum garage door involves cleaning the surface thoroughly to remove dirt and grease. Sand the door to create a rough surface for better paint adhesion. Apply a primer suitable for aluminum, then paint with a high-quality exterior paint. Be sure to use a paint designed for metal surfaces to ensure durability and proper coverage.

To paint an aluminum garage door, clean and sand the surface, apply a metal primer, and then paint with high-quality exterior paint. This process ensures good adhesion and long-lasting results.