As your boat ages, the paint on the aluminum around the window frames dulls and flakes away. Part of the pleasure of owning a boat is having it look new and clean. As the window frames become worn looking, it detracts from the look of the boat. It's very simple to redo the window frames. Here is the method I use and the results should last you a good five years.
persiane como
We'll begin with the makeover for painted aluminum window frames that have worn from weather or waxing. Cleaner waxes actually remove the paint as time goes by. These frames appear grey with areas of some paint remaining. **Around either side of the framing, put blue masking tape (doubled or tripled for protection) so not to scratch the window or gel coat...make it as wide as you feel comfortable. Take a drill with a wire brush attachment (2" hollow in the middle for easy use) and go over the framing lightly. This will take off any corrosion and small dimples... you can go over the painted part also, making everything nice and smooth with no high points. Make sure to replace or add to any masking tape that ripped or came off. Go over the framing with a rag to take off dust and residue. Take another rag with a touch of acetone and go over again. Wipe with a clean rag and making sure it is dry take 220 grit emery papers and lightly go over the framing, looking for discrepancies that need to be lightly gone over again. Finish up using the drill with the wire brush attachment. Use rag to clean and go through the same procedure as above with the acetone. The boat framing should be smooth, some areas may still have the paint on, and the aluminum is bright and clean. You need the boat aluminum framing to be clean!

Now put paper on and around the boat window, because we will be spray painting it. Put the paper far enough around to take care of any over spray....and of course, do it on a calm, dry, warm day. I use high heat engine spray paint (spray can) that you can find in many Marine Stores or Auto parts stores. I think it has better adhesion properties, and the Boat frame. Since it is aluminum, does get mighty hot in the direct sun.