This primer is low-VOC (volatile organic compounds) and works on a variety of surface types, including wood, metal, plastic, and drywall. An oil-based paint uses oil, as opposed to water ...
All you need is a suitable paint and primer to coat the metal and block moisture and oxygen from reacting with the iron ...
They can also be used to apply thick, textured paint directly onto the canvas. Canvas comes in primed or unprimed form. Primed canvas has already been coated with a primer, such as gesso.