Hammerite Direct To Rust Metal Paint can be painted directly onto rusty surfaces &, thanks to its special 3 in. 1 formula, there is no need to use a primer or undercoat saving you precious time! Hammerite forms a superior barrier that not only seals out moisture, but also gives long lasting protection, both inside & outside. Touch dry in an hour, Hammerite is corrosion resistant & is suitable for use on a wide range of exterior metal including gates, railings, drainpipes, guttering & garden furniture.