How Do I Paint Galvanized Sheet Metal

The acid in the vinegar will act to etch the metal and help the paint adhere.

How do i paint galvanized sheet metal. The secret to painting galvanized steel is white vinegar. The vinegar is a mild acid which acts to etch the galvanized coating so the paint will stick. Apply a rust proof primer to the galvanized metal with a paint brush. There are four recognised methods of surface pre treatment that produce a sound substrate for a paint coating.

Spread the paint across the surface with long linear strokes. Rinse the metal with a weak solution of water and ammonia and allow it to dry. T wash etch primers sweep blasting and weathering. Check to make sure there are no gaps or missed spots before moving on.

Apply two topcoats of paint on top of the primer. Use a primer designed for use on metals. Use the tip of your brush to dab the paint into grooves creases and textured areas. To do this you can use a cloth that is damp with vinegar or mineral spirits rubbing it across the metal until it is smooth.

Wipe the galvanized surface down with white vinegar. Preparation of galvanized steel before painting. Selecting the correct paint for galvanised metal. Once the metal has dried dampen a cloth with white vinegar and wipe the surface down.

White vinegar is both effective and non toxic so it is much safer to use than your average industrial solvent. 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. Brush the primer with a synthetic bristle paintbrush or if you want to avoid brush marks spray it using aerosol cans or air spray equipment. Allow the primer to dry completely.

Here s how to paint galvanized metal. All you have to do is simply apply the vinegar to a clean rag and then wipe down the galvanized surface. Rinse the metal and let it dry completely for several hours. Wash the metal thoroughly with hot soapy water.

Apply a second coat. Prime the metal with an acrylic latex metal primer. If you have a kitchen then you probably already have this handy solution. Prime the surface with a primer made for metal.

If the ducts will get hot use a primer with a high heat resistance. Clean new galvanized metal surfaces with a water based cleaner degreaser to remove any oil or and contaminants.