How to Put a Rust Patina on Iron

Clean the iron. The patina will not affect the iron if it can't get to the metal. Apply the degreaser to the surface and scrub it to remove dirt, debris and residues that might have accumulated. Wipe the surface with the cloth to remove the degreaser and debris.

Apply a metal primer to the iron, which prevents the real rust from breaking through the painted-on patina and ruining the final effect. Use the paintbrush to apply the primer, applying only one coat. Cover every part of the iron piece. Let the primer dry for 24 hours in a warm, dry place.

With another brush, apply the metallic surfacing solution -- after preparing it according to the manufacturer's instructions. Paint one coat onto the iron and let it dry up to an hour. Apply a second coat and let it dry up to 15 minutes. The surface should be "tacky" to the touch, according to Sophisticated Finishes.

Use the third paintbrush to apply the patina after preparing it according to the package instructions. Paint the patina over the entire surface or in strategic places as desired to mimic rusting. Apply more for a deeper rust coloring. Allow the patina to dry overnight.

Spray or paint on a clear sealant to keep the patina from flaking. Allow the piece to dry thoroughly before placing it in your home or yard.