For the best protection, apply this corrosion resistant primer before painting heavily rusted metal or before applying a tinted Rust Coat colour. Designated with the Home Owner\’s Guarantee. Note: Use red oxide primer 64-18 for heavily rusted metal, 64-41 white for light top coat colours and 64-42 for dark top coat colours. Alkyd primer Urethane fortified Superior corrosion resistance Restores and protects metal Adheres to bare or sound rusted metal and previously painted surfaces 4 L will cover up to 400 sq. ft. (40 sq. m.) For interior and exterior use White primer 3.7 L