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! Touch dry in an hour, Hammerite gives long-lasting protection & is suitable for use on a wide range of exterior metal including gates, railings, drainpipes, guttering & garden furniture. Apply direct to rust. Protects for up to 5 years. No primer or undercoat required. For metal inside & outside the home.