Yes. KBS Klean is a water based cleaner and degreaser that rinses away completely, which is exactly what you want before spraying paint. Solvent based cleaners can leave an invisible residue that interferes with paint adhesion and appearance. Clean with KBS Klean, rinse thoroughly, let the surface dry, then etch bare metal with RustBlast before you paint.
Why a Water Based Cleaner Instead of a Solvent
The RustBlast directions put it plainly: clean with a water based cleaner and degreaser like KBS Klean, and avoid any solvent based cleaners, because they can leave an invisible residue which can interfere with paint adhesion and appearance. Invisible is the operative word. You cannot inspect your way past it, and you find out about it after the paint is on.
Acetone, mineral spirits and lacquer thinner all fall in that category for this purpose. They evaporate, but what was dissolved in them is redeposited on the panel as the solvent flashes off.
The Cleaning Step, Start to Finish
- Dilute with hot water at the ratio that matches the soil level. See the dilution ratios.
- Shake well, then apply the solution liberally.
- Wash the surface for 5 to 10 minutes, or as long as needed to produce a clean surface. Use a bristle brush or scouring pad on stubborn areas.
- Do not let KBS Klean dry on the surface. Rinse thoroughly with water.
- Let the surface dry completely.
- On bare metal, treat with RustBlast before painting.
Wear protective rubber gloves and safety glasses at all times.
Heavy Grease and Oil
For heavy contamination, use the heavily soiled ratio of 1 part hot water to 1 part KBS Klean, and extend the contact time. Extended soaking of up to 24 hours or more may be necessary on badly contaminated parts. Retreat with fresh solution as needed until the surface is clean rather than trying to do it in one pass.
Hotter water does more for you here than a richer mix. The warmer the water used, the more effective and powerful the cleaning action.
Frequently Asked Questions: Cleaning Metal Before Painting
Still have questions about cleaning metal before paint? Contact us for help.
