As a selfprimed, surface tolerant paint system or as an intermediate or finishing coat in heavy duty paint systems where low VOC and high film build are required. For immersed areas Hempadur Mastic 45881 is only recommended for minor repairs. Can be specified where extended recoating properties for polyurethane topcoats are requested (typically travel coating). May be used directly on cured zinc silicate (Galvosil products) or spray-metallized surfaces to minimize popping.