Preparing Sheet Metal For Painting

Prime the surface with a primer made for metal.

Preparing sheet metal for painting.

The vinegar s acidity will further abrade. Sanding and applying primer. Once done you can paint over rust. Place the object you re painting on a drop cloth.

Spray the metal with compressed air. No matter what the material it s hard to apply a proper coat of paint if you re brushing over bits and particles. If you haven t already spread out a drop cloth or a large plastic sheet. Surface preparation is the key to success when you prepare metal for priming and painting.

Things you ll need chemical degreaser distilled white vinegar lint free cloth high grit sandpaper or wire brush exterior latex primer exterior latex paint paintbrush or roller rubber gloves. The vinegar is a mild acid which acts to etch the galvanized coating so the paint will stick. Preferably set up your painting area outside. Some metals are pre coated with an oil that is designed to.

If you need to paint inside choose a well ventilated area and consider using a respirator. If the old paint is in poor condition you can remove it by hand wire brushing sanding. Start with a wire brush photo 1. Wipe the galvanized surface down with white vinegar.

Start with 120 grit sandpaper and work to finer grade sandpapers ending with 320 grit. Scrub partially rusted metal areas with a wire brush to remove flakes and powdery surface rust then prime with a rust inhibitive primer. This will remove any dust and dirt from the surface of the sheet metal. 5 important steps preparing metal for paint clean the surface.

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. Remove loose and peeling paint. Paint will not adhere to dirty oily surfaces.

To properly prepare new metal surfaces use mineral spirits to remove grease and apply a. With the rust removed sand the entire surface to smooth out uneven areas and dull the surface so the primer and paint can adhere. Spray the sheet metal with white vinegar and wipe it down with a clean rag.