Painting Galvanised Sheet Metal

Galvanized steel sheet plates are intended for use where greater corrosion protection is required without painting a lower cost alternative to stainless steel galvanized sheet and plates have a rust free protection for up to 30 years while maintaining strength with a durable surface coating.

Painting galvanised sheet metal.

Here s how to paint galvanized metal. If you have a kitchen then you probably already have this handy solution. Avoid using alkyd based paints such as spray paint on galvanized steel. Prime the surface with a primer made for metal.

For the most dependable results look for paints that are formulated specifically to bond to galvanized steel. Remove any handles or other attachments from the metal. Rinse the metal and let it dry completely for several hours. You first are advised to prepare the surface of the item to be painted so that the paint for galvanized metal stands its best chance of looking good for several years.

The following is a quick introduction for the process. Metals depot stocks many sizes in precut sizes full mill sizes or we can hot dip virtually any. The enamels in alkyd paints can react with the slick zinc finish on a galvanized steel surface leading to poor adhesion and peeling. There are four recognised methods of surface pre treatment that produce a sound substrate for a paint coating.

The vinegar is a mild acid which acts to etch the galvanized coating so the paint will stick. White vinegar is both effective and non toxic so it is much safer to use than your average industrial solvent. That s great for preventing rust but it also prevents solid paint adhesion. Go over the metal with a wire brush to remove any oxidation.

Painting galvanised metal is very easy as long as the right steps are carried out. Rinse the metal with a weak solution of water and ammonia and allow it to dry. T wash etch primers sweep blasting and weathering. Wash the metal thoroughly with hot soapy water.

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. Bituminous latex acrylic and vinyl paints tend to adhere well to galvanized metals. The secret to painting galvanized steel is white vinegar. Wipe the galvanized surface down with white vinegar.

Preparation of galvanized steel before painting. How to paint galvanized metal.