Dicor metal RV roof primer is formulated to reduce further corrosion of metal roofs and enhances the adhesion for the Dicor Metal RV Roof Coating. NOT recommended for EPDM rubber or TPO roofing. Artic white, 1 quart can covers 50sq. feet.
Typically the whole metal roof will not need primed, only the areas where rust was physically removed or any new metal.