I need to repaint a part of my radiator. I have already sanded the tarnished area with a grinder and a flapdisk but not the whole area (half of a fin) I'm getting ready to refinish, IOW most of the area still has paint but I removed it where it looked ugly (some burn marks).
Should I use an oil based primer (as I think that's best for metal) over the whole area and then just regular indoor paint?
Best Answer
The easiest way to prepare and paint your radiators is to: 1) scrape off any loose or flaking paint with a scraper. 2) starting with an 80 grit and working through to 120 grit sand any rust off and feather any paint edges smooth. 3) wipe the surface with a mineral spirit or paint thinner to remove any contaminates. 4) spray surface with an appropriate High heat spray paint in a can using partial overlapping strokes. Let each application dry as per instructions on label. No need for primer. And any brand will do. Some popular and quality names are Rustoleum, Krylon and Ace Brand spray paints. If there is hard to reach rust that can't be removed consider using a rust neutralizer. Spray this on any rusty areas and it will halt the rust from spreading while it turns it to a black color. It is now primed and ready for paint.