I'm not sure, but there are spray paints designed for outdoor use on metal, and when i hear 'outdoor' i hear 'rain' which equals moisture, so i suspect it just might work.
Can You Spray Paint Metal Furniture. You can choose the fashionable metallic shade, or the minimal matte. Spray paint provides a smooth, even finish on metal surfaces and dries quickly.
Metal Folding Chairs - Foter from foter.com
Metallic spray paint has a sparkly shine and is great for painting surfaces like plastic or metal. Practice spray painting on a plank of wood or a trial item that you don't use very often. Repainting indoor metal furniture requires the same process used with outdoor furniture, but you don't need to pay as much attention to weatherproofing.
Its oil base makes it somewhat slow to dry, but it stands up to cleaning and use well;
You should also check out the blog at. You can spray paint directly onto the flowers! While other spray paints can have an unpleasant odor, you will be glad to know that you can use this product freely indoors, even in rooms with low air and last but not least, spray paint for metal comes in a diverse range of colors. Spray paint will give the best results if the surrounding temperature, humidity, and wind are under control.
