How To Paint Sheet Metal

Coat either type of metal with a rust inhibiting primer and make sure it s formulated for use on metal same goes for your paint choice too.

How to paint sheet metal.

Paint can add a custom look to almost anything but it won t properly adhere to a smooth metal surface without preparation. Apply spray paint to the sheet metal. Choose a type of paint you may or may not need to prime the surface depending on the type of paint you choose. 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.

Once the metal has dried dampen a cloth with white vinegar and wipe the surface down. The acidity of the vinegar will react with the metal treating the surface to promote paint adhesion. Spray in a quick smooth and even pattern until the surface is covered. If you want to paint sheet aluminum you ll need to use a special kind of primer to rough up the surface or you will end up with a finish that will flake and peel rather quickly.

Step 1 scrub any greasy or oily areas using a degreaser and a brush. The acid in the vinegar will act to etch the metal and help the paint adhere. The primer should be allowed to dry for at least 24 hours. Let the paint dry in between coats.

I now know the paint will scratch off. Use a brush or a roller to paint depending on the shape of the piece. To prep metal for paint adhesion you must first clean it with soap and water remove light rust with a wire brush sand it with fine grain sandpaper and then in most cases prime. Wash the entire sheet aluminum surface using a pressure washer.

For best results keep the can parallel to the sheet metal surface and spray in a back and forth motion over the surface. There are generally two types of metal paint primers that you can use on your shed red oxide zinc chromate and zinc chromate. Before painting shiny sheet metal abrade it with fine sandpaper or steel. To get the best possible finish when painting metal it is important to prepare the metal before painting it you should also chose a good quality paint and p.

The red oxide zinc chromate is best used for steel ironworks and galvanized steel. Use the zinc chromate if your shed is made from aluminum or any light alloy. I painted on sheet metal as an experiment and happen to like what i have done but one problem. All you have to do is simply apply the vinegar to a clean rag and then wipe down the galvanized surface.

A discussion started in 2004 but continuing through 2010. Unfortunately after the fact.