Preparing Bare Sheet Metal For Paint

Start with 120 grit sandpaper and work to finer grade sandpapers ending with 320 grit.

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

A paint scraper or metal putty knife may also do the trick. If the old paint is in poor condition you can remove it by hand wire brushing sanding. 5 important steps preparing metal for paint clean the surface. Scrape off light loose rust with a wire brush.

For large flat surfaces use a sanding block to get even pressure. However badly rusted metal areas need more prep work and possibly a special primer. If you re dealing with a lightly rusted surface you may just need to give it a quick scrub with a brush. 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.