How To Prep Sheet Metal For Paint

Consider finishing off the sanding with a 200 grit sanding disk.

How to prep sheet metal for paint.

The first step is to clean off loose rust and flaking paint and then apply a rust inhibitive primer. Clean new galvanized metal surfaces with a water based cleaner degreaser to remove any oil or and contaminants. Zinc helps prevent rust from developing in the future. For large flat surfaces use a sanding block to get even pressure.

In this video i ll go over and show you how i paint raw metal or bare steel products from jcroffroad. As soon as the top layers of old paint or material are gone switch up to a higher finer grit. Black in color ppg dp90lf does help us to see imperfections but we can t see them all. The armor and bumpers come unfinished and will need to.

Here a powder free latex glove protects the clean primer as we feel the steel. Purchase products that are labeled for metal and contain a zinc additive. Use a light gray primer for a light final paint color and a black primer for a darker final color. To properly prepare new metal surfaces use mineral spirits to remove grease and apply a rust inhibitive primer before painting.

You don t need to get down to bare shiny metal just clean off the flakes and powdery surface rust that prevent paint from adhering. All you have to do is simply apply the vinegar to a clean rag and then wipe down the galvanized surface. See all 28 photos. Start with 120 grit sandpaper and work to finer grade sandpapers ending with 320 grit.

Choose a type of paint. For painted surfaces that are in sound condition remove dust with a clean dry cloth de gloss the surface with light sanding and wipe with mineral spirits to ensure good adhesion. Once the metal has dried dampen a cloth with white vinegar and wipe the surface down. With the rust removed sand the entire surface to smooth out uneven areas and dull the surface so the primer and paint can adhere.

The disk is smoother and will not eat into the metal surface allowing you to give the metal a good sanding until all the material is gone and the surface is nice and clean. The acidity of the vinegar will react with the metal treating the surface to promote paint adhesion. Sanding and applying primer.