Preparing Bare Sheet Metal For Paint

Remove loose and peeling paint.

Preparing bare sheet metal for paint.

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. With the rust removed sand the entire surface to smooth out uneven areas and dull the surface so the primer and paint can adhere. If the old paint is in poor condition you can remove it by hand wire brushing sanding.

To properly prepare new metal surfaces use mineral spirits to remove grease and apply a. The first step is to clean off loose rust and flaking paint and then apply a rust inhibitive primer. 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. Scrape off peeling paint and powdery flaking rust until the surface is mostly smooth.

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. Sanding and applying primer. A paint scraper or metal putty knife may also do the trick. 5 important steps preparing metal for paint clean the surface.