Hammerite Direct To Rust Metal Paint can be painted directly onto rusty surfaces and, thanks to its special 3 in 1 formula, there is no need to use a primer or undercoat. Hammerite forms a superior barrier that not only seals out moisture, but also gives long-lasting protection, both inside and outside. Touch dry in an hour, Hammerite is corrosion resistant and is suitable for use on a wide range of exterior metal including gates, railings, drainpipes, guttering and garden furniture. The paint has a subtle hammered effect with a metallic sheen. Protects for up to 8 years.