Galvanized Sheet Metal Painting

Let the primer dry completely which should take anywhere from 2 6 hours so your paint will stick properly.

Galvanized sheet metal painting.

The surface that has been painted. Galvanized steel is a great material to use for a variety of tools products and projects and it s environmentally friendly. The choices of paint for galvanized metal will depend upon both the application and service environment. New galvanized metal a product used to make corrugated sheets gutters and downspouts is usually smooth and is coated with either a layer of oil to prevent white rust or is passivated.

Alkyd and oil based paints may seem to stick at first but the oily layer eventually sheds the paint. The acid in the vinegar will act to etch the metal and help the paint adhere. 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. Before painting galvanized metal such as drip strips around eaves or roof flashing take the following steps so the paint will adhere properly and not peel.

When painting galvanized steel all paint systems used should be specifically formulated for use on galvanized steel and applied in accordance with the paint manufacturer s recommendations. Galvanized metal is difficult to paint because it s coated with a layer of oil to prevent white rust. Paint that has lost its adhesion to a galvanized metal substrate e g. Once the metal has dried dampen a cloth with white vinegar and wipe the surface down.

To paint galvanized steel start by applying a latex based primer evenly across the surface to stop the paint from soaking into it. In fact roughly 69 of steel is recycled in north america each year.