Metal garage doors are common. You can make yours look different and more expensive by painting them so they look like wood.
Step 1 - Cleaning
Begin by completely and thoroughly cleaning the metal garage doors. You need to take off all the dirt and grime from the metal in order for the stain to adhere properly. Rinse clean and inspect. If needed, wash and rinse a second time before removing all the hardware from the metal garage doors.
Step 2 - Dark Gel
Begin painting with a dark color gel that’s the color of hardwood. The stokes need to go from side to side, not up and down. Complete one panel at a time and run the graining tool through it for the wood effect, and then leave the gel to dry overnight. Inspect and add a second coat and use the graining tool again if the coverage hasn’t been complete or there are light spots on the metal garage doors. Allow ample time to dry.
Step 3 - Light Gel
To create the wood effect, cover with a lighter colored gel stain. You only need a light coat, so much of the dark color shows through. Allow enough time to dry and then protect with a clear coat intended for oil-based stains.