Painting metal railings can be challenging if you do not have experience with paint jobs. There are a number of steps that you have to follow such as:
Step 1: You may want to cover the surrounding area or the flooring with cloth or painters tape to keep unwanted paint from staining the vicinity. Once you already have prepared the area, the next thing that you need to do is to get a clean rag and wipe the metal railings first (the same material that metal detectors UK are made from). You cannot afford to have debris on it or dirt interfering with the paint job. Wearing a kn95 mask also keeps you from inhaling dust particles. If the metal railing has rust on it then get a wire brush and clear the surface of the railings of any rust. Using a sandpaper to smoothen excess rust is recommended.
Step 2: Once you are finished cleaning the metal railing from debris or dust residue then the next thing that you should do before actually painting the metal railings is priming it. Use a rust inhibiter primer and make sure you shake it well for thirty seconds. It would be better to use an air gun as you prime the railings and keeping the nozzle at least six inches away from the surface should keep the primer from dripping. Use a paint brush on areas where the rust is thick.
Step 3: When the primer gets dry, wipe the metal railings with a tack rag then get the wet or dry fine grade sandpaper and wet it in a bucket of water before wiping down the railings. Be gentle just enough to roughen the surface so that the enamel paint will be able to stick on it better. Shake the enamel paint for thirty seconds and apply the paint the same way you did with the primer. It is also highly recommended for you to apply two coats.
These three steps are the basics when it comes to painting your metal railings and in case you need further assistance, you may want to get in touch with home renovations experts.