Painting Sheet Metal Shop

To prep and paint metal you ll need shop rags acetone scuffing pad self etching primer and your choice of spray paint.

Painting sheet metal shop.

Once the metal has dried dampen a cloth with white vinegar and wipe the surface down. Start by cleaning the. While you re cleaning the surface you ll also want to remove leftover paint if any. This makes it highly resistant to paint adhesion.

Texturize the surface of the sheet metal. Sheet aluminum must be pre treated through abrasion to help encourage it to accept paint. If the sheet metal is smooth to the touch you will need to texturize it before painting. Large cans may be the most cost effective option when painting large linear metal objects such as fences and backsplashes but spray paints e g rust oleum hammered metal finish spray 8 74.

Using high grit sandpaper or steel wool rub the surface of the sheet metal. Like most types of metal surfaces sheet aluminum is hard slick and nonporous. Because of its smooth slick zinc coated finish galvanized steel can be tricky to paint. This will allow the paint to adhere to the metal.

On older galvanized metal surfaces where the zinc coating has begun breaking down known as white rust use a wire brush or fine sandpaper to remove the chalky film before cleaning it. If the paint on the building was an oil based paint you must use oil. The acid in the vinegar will act to etch the metal and help the paint adhere. Unfortunately you can t abrade aluminum by sanding it because the surface is too hard.

Once you ve roughened the surface wipe the sheet metal with white vinegar and a. Acrylic latex house paint suitable for painting on metal is recommended unless the previous coats of paint were oil based. Analyze the surface of the sheet metal. If it s galvanized metal the magnet doesn t stick clean it with a detergent solution since the surface normally has oil on it which will prevent the paint from sticking.

Don t forget to wear gloves eye protection and a respirator mask. Oct 21 2016 here are some important tips on how to paint metal surfaces. Create a rough surface on the sheet metal. What paints should be chosen for painting galvanized sheet of metal and the process of painting.

How to paint galvanized steel.