Preparing Bare Sheet Metal For Paint

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.

Preparing bare sheet metal for paint.

Sanding and applying primer. If the old paint is in poor condition you can remove it by hand wire brushing sanding. A paint scraper or metal putty knife may also do the trick. With the rust removed sand the entire surface to smooth out uneven areas and dull the surface so the primer and paint can adhere.

For large flat surfaces use a sanding block to get even pressure. Start with 120 grit sandpaper and work to finer grade sandpapers ending with 320 grit. The first step is to clean off loose rust and flaking paint and then apply a rust inhibitive primer. Scrape off light loose rust with a wire brush.

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. However badly rusted metal areas need more prep work and possibly a special primer. Scrape off peeling paint and powdery flaking rust until the surface is mostly smooth. If you re dealing with a lightly rusted surface you may just need to give it a quick scrub with a brush.