30+ Painting Window Frames Exterior US. If you are painting a sash window, paint the bottom frame first. For the best results when painting outside, always start at the top and work.
There's less flexibility, however, for scheduling a paint job on exterior trim.
Sand the scraped window surface. Next, apply the final finish coat. Get your roygbiv on with these color picks—and a few contrasting neutrals—we found to let your trim take center stage. If possible remove the window sash from the frame and paint on saw horses.