RUST-OLEUM® Alkythane® 7500 is ideal for use on metal surfaces primed with RUST-OLEUM® rust primers and developed to be applied by brush or roller. Airless application however is also possible. Applied on old intact coatings or well primed surfaces, Alkythane® 7500 offers a long-lasting industrial-duty protection. For metal constructions in very aggressive environments we advise to use an additional coat of RUST-OLEUM® Primer or Alkythane® 7500 topcoat.