Yes. New metal straight from the factory is not clean metal. It carries solvents, manufacturing residues and oils from forming and handling, none of which are visible. Clean it with KBS Klean first, then etch it with RustBlast, and give the etch step extra time because new metal is typically very slick.
Why New Metal Needs Cleaning
Steel does not leave the mill bare. Forming oils, rust preventive films, cutting fluids and handling residues all end up on it, and they are there precisely because they stop the surface from oxidizing in transit. A surface that resists water also resists the coating you want to bond to it.
Clean with KBS Klean before moving on to the etching step. Use a water based cleaner and degreaser, not a solvent: solvent based cleaners can leave an invisible residue which can interfere with paint adhesion and appearance.
Why the Etch Step Matters More on New Metal
New metal is typically very slick, which makes proper etching especially important. There is no rust and no existing profile for the coating to key into, so the anchor pattern has to come entirely from RustBlast. Spend adequate time on the RustBlast step to ensure a thorough etch across the entire surface.
Keep the surface wet with RustBlast for a minimum of 30 minutes on smooth surfaces, reapplying as needed so it never dries. Then rinse thoroughly with water and allow the surface to dry completely.
The Full Order on New Steel
- Clean with KBS Klean at the ratio that matches how oily the metal is. Rinse thoroughly, let it dry.
- Apply RustBlast full strength to the dry surface. Keep it wet at least 30 minutes on smooth metal.
- Rinse thoroughly with water, then dry the surface immediately to minimize flash rust.
- Coat within about 7 days. Apply RustSeal in two coats at 2 mils each, between 55 and 82 degrees F, with 2 to 6 hours between coats.
Handle It With Gloves From Here On
Once the metal is cleaned and etched, one bare handed touch transfers skin oils. Slight residues of grease, oil or fingerprints can ruin an otherwise good paint job, so wear gloves for the rest of the process.
Frequently Asked Questions: Prepping New Metal
Still have questions about prepping new metal? Contact us for help.
