Crown Trade Protective Coatings High Build Rust Inhibiting Metal Primer/Undercoat has been developed for use as a spot primer to prepare failed, weathered cladding prior to painting with Fast Drying Cladding Finish. It is also recommended for use on ferrous and non-ferrous metals, providing an excellent foundation for the protection of interior and exterior metalwork, particularly structural steelwork. 2.5lt Crown Trade Protective Coatings High Build Rust Inhibiting Metal Primer/Undercoat Technical Details Finish Primer Application Brush, Roller Recoatable Time 6 Hours Spreading Rate Up to 7m2/litre Pack Size 2.5L Touch Dry 3 Hours Base Solvent