What can I do with this rusty mess of a window (pic attached)?
+5
Downstairs window is a rusty mess, I repair with proper paint and the rust comes back
Remove paint and use a wire brush to remove the rust. You might want to use a drill with a wire brush attachment. If it's extensive, it may need to be replaced. Once all rust is taken care of, seal with a good primer and paint with a rust inhibiting paint. You probably need to see if there's something you can do to prevent rain and moisture, especially if water is sitting on it.
scrape the rust completely off. Paint with Rustoleum at least 2 coats. Refresh as needed.
First, remove the rust with a wire brush. If you have a drill, get a wire brush attachment.
Once the loose debris is removed, use a rust reformer spray. This bonds to the rusty surface to make it a paintable surface.
Then, Paint the surface and the rust won't come back.
Wire Brush: https://amzn.to/2xkOBSA
Wire brush drill bit attachment (if you have drill): https://amzn.to/2Xgnmb6
Rust Reformer: https://amzn.to/2XeRzr6
need to use a rust converter these......Stabilize rusty surfaces prior to painting over with the system of your choice.
A metal treatment that, when applied to rusted surfaces, causes iron oxide (rust) to chemically change to iron phosphate—an inert, hard substance that appears black. Once dry, the treated surface can be overcoated with whatever paint system is desired. (Best results have been achieved with oil-base primers and topcoats. Test a trial sample before overcoating with epoxy or latex-based paint.) Application does not require the removal of light rust, however loose paint, rust scale, dirt, oil, grease and other accumulations should be removed first with a wire brush.
Key Features
here's the best https://www.westmarine.com/buy/ospho--rust-converter-metal-primer-gallon--P012222196?pCode=12222196&mrkgcl=481&mrkgadid=3076579107&cm_mmc=PS-_-Google-_-GSC%3ENonB%3EProduct%2520Type-_-12222196&product_id=12222196&adpos=1o3&creative=108421551244&device=c&matchtype=&network=g&gclid=EAIaIQobChMIjq_AmoON4wIVCcRkCh2vFgRJEAQYAyABEgJVhvD_BwE if you don't do this first it's futile trying to do anything else.
Talk to the people at your local home improvement store(s).
Every answer above will help, but I would like to add that you need to protect yourself as you work this issue. Wire brushes, drill attachments and chemicals can send tiny bits of metal debris flying. Wear safety goggles (not just prescription glasses if you wear them), a simple particle mask and gloves. If you do this while you work on your project, both you and the window ledge will be all the better for it.
Does this window sill have drain holes so water can escape when it rains?
I’m not sure