Repainting Galvanized Siding

Possible cause 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.

Repainting galvanized siding. Paint applied over this oily surface or clear passivator will peel quickly. Step 1 clean the steel siding. The first step includes cleaning. The vinegar is a mild acid which acts to etch the galvanized coating so the paint will stick.

It also helps to peel away the previous paint on the steel siding leaving it neat and clean. Go over the metal with a wire brush to remove any oxidation. There are a few different methods of doing this depending on how good of a job you want to do how much time and energy you have and how large of an area you are doing. Wait for this layer of paint to dry and then apply a second coat.

Things you ll need chemical degreaser distilled white vinegar lint free cloth high grit sandpaper or wire brush exterior latex primer exterior latex paint paintbrush or roller rubber gloves. Wipe the galvanized surface down with white vinegar. This will help clean away all the dirt that accumulates on the steel siding. Once dry remove the plastic sheeting and masking tape.

The best cordless vacuum for pet hair. Prime the surface with a primer made for metal.