Repainting Galvanized Siding

Wipe the galvanized surface down with white vinegar.

Repainting galvanized siding.

This will help clean away all the dirt that accumulates on the steel siding. Paint applied over this oily surface or clear passivator will peel quickly. If you are striping a small area then you can do very well with a bucket of water that has some bleach and tsp in it. Wash the steel siding with trisodium phosphate tsp and use a pressure washer to rinse thoroughly.

Wait for this layer of paint to dry and then apply a second coat. Go over the metal with a wire brush to remove any oxidation. 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. Prime the surface with a primer made for metal.

It also helps to peel away the previous paint on the steel siding leaving it neat and clean. Apply the acrylic paint to the wall on top of the primer in the same way you applied the primer to the metal siding. The first step includes cleaning. 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.

Step 1 clean the steel siding. 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.