Prep Sheet Metal For Paint

If the old paint is in poor condition you can remove it by hand wire brushing sanding.

Prep sheet metal for paint.

Start with a wire brush photo 1. However badly rusted metal areas need more prep work and possibly a special primer. Clean the steel with a chemical degreaser. The acidity of the vinegar will react with the metal treating the surface to promote paint adhesion.

The acid in the vinegar will act to etch the metal and help the paint adhere. Clean new galvanized metal surfaces with a water based cleaner degreaser to remove any oil or and contaminants. Choose a type of paint you may or may not need to prime the surface depending on the type of paint you choose. With the rust removed sand the entire surface to smooth out uneven areas and dull the surface so the primer and paint can adhere.

Remove loose and peeling paint. To prep and paint metal you ll need shop rags acetone scuffing pad self etching primer and your choice of spray paint. Toward the end of our last installment minor metalwork was completed and a single wet coat of ppg s dp90lf 90 denotes black epoxy primer was applied to surgically clean bare steel. Scrub partially rusted metal areas with a wire brush to remove flakes and powdery surface rust then prime with a rust inhibitive primer.

X expert source james guth. Sanding and applying primer. Don t forget to wear gloves eye protection and a respirator mask. Start with 120 grit sandpaper and work to finer grade sandpapers ending with 320 grit.

For large flat surfaces use a sanding block to get even pressure. To properly prepare new metal surfaces use mineral spirits to remove grease and apply a. To prep metal for paint adhesion you must first clean it with soap and water remove light rust with a wire brush sand it with fine grain sandpaper and then in most cases prime. Once done you can paint over rust.

All you have to do is simply apply the vinegar to a clean rag and then wipe down the galvanized surface. Once you ve finished cleaning the steel let it rest until all traces of the degreaser have. Once the metal has dried dampen a cloth with white vinegar and wipe the surface down. Spray the surface with the solution then scrub it with a clean lint free.