How to Spray Paint Garage Doors or Roll Up Doors 

Nothing much used to prevent overspray, just a steady hand. We sprayed these doors 5 years ago. Because of the paint job before 5 years ago, (before us) and the intensity of the direct sunlight on a dark color, the paint was failing in some locations. The edges have molding that is already the brown color so a steady hand, overlapping the spray from the roll up door onto the molding was all that was needed. We did use cardboard and drop cloths for the ground below.