Things You Will Need
While somewhat time consuming, this is a job any do-it-yourselfer can manage. Do this job in the warmer months, as you'll need to leave the heat off while you are painting and while the paint is drying.
-
Remove any rust build up. There are two ways of going about this job. One option is to use a fine-grit sandpaper that is made for use on metals. The other option is to use rubbing compound. Either option works well, but both take quite a bit of elbow grease to get the baseboard heater down to a shiny surface.
-
Apply a metal primer to the baseboard. Use either a spray or a brushable paint according to the manufacturer's specifications. Allow two hours drying time. You may need multiple coats to get adequate coverage. No metal should show through the primer.
-
Paint a topcoat with a metal enamel. Either a spray or a brushable paint will work. Allow at least 24 hours for paint to completely dry before touching the surface of the heater or turning on heat.