If you have noticed rust stains on your metal window frames, it is important to take action quickly. Rust can cause serious damage to the frame and can even lead to structural failure. Fortunately, there are several ways to repair rusted metal window frames and restore them to their original condition. One of the most effective methods for removing rust is to mix water and vinegar in equal parts and use it as a natural rust remover.
Simply pour the mixture into a bucket and apply it to the affected area. This method is especially effective for persistent stains. For lighter rust stains, you can use a piece of rolled aluminum foil. Rub the rust stain with the aluminum foil and it should disappear.
This method works well even in areas where the rust has already set in. If the rust is more severe, you may need to use a wire brush to scrub away any flakes or powdered surface rust. Once this is done, you can apply a primer that inhibits rust and then paint over the area. For heavily oxidized metal areas, you can use a special primer that chemically converts rust into a paintable surface.
For stains that are too rusty or too delicate or detailed to be thoroughly cleaned, you can use a product such as Rust-Oleum Rust Reformer, which absorbs rust and turns it into a surface that does not rust and can be painted.