Preparing Bare Sheet Metal For 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.

Preparing bare sheet metal for paint.

Sanding and applying 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. 5 important steps preparing metal for paint clean the surface. Remove loose and peeling paint.

If the old paint is in poor condition you can remove it by hand wire brushing sanding. Scrape off peeling paint and powdery flaking rust until the surface is mostly smooth. However badly rusted metal areas need more prep work and possibly a special primer. Scrape off light loose rust with a wire brush.

For large flat surfaces use a sanding block to get even pressure. The first step is to clean off loose rust and flaking paint and then apply a rust inhibitive primer. If you re dealing with a lightly rusted surface you may just need to give it a quick scrub with a brush. With the rust removed sand the entire surface to smooth out uneven areas and dull the surface so the primer and paint can adhere.