The first thing you ll need to do is wash your shed with warm soapy water.
How to paint metal barn siding.
Place a roll of painter s paper and 1 inch masking tape on the paper and tape dispenser.
You can also use oil based alkyd paint but you need to first apply an undercoat of a galvanized metal primer such as sherwin williams pro industrial pro cryl universal acrylic primer.
Use tsp to wash all metal surfaces to be painted.
If either red or white rust is evident scrape or brush away as much rust as possible and then sand lightly removing all rust before proceeding.
To do so sand the general area lightly and use a high quality primer to protect the exposed steel from corrosion.
A paper and tape dispenser is a convenient tool.
To paint a rusty metal shed you ll need to sand away the rust apply a special primer then paint it.
A new paint job was the solution.
Step 4 retouch.
Step 2 tackle rust.
Wash the steel siding with trisodium phosphate tsp and use a pressure washer.
Dirt can increase rust so this way you start with a good foundation.
Allow sufficient time for the primer to dry before applying the topcoat.
Work from the top down to eliminate dripping paint from ruining your hard work.
The first step includes cleaning.
How to paint a metal pole barn.
Treat any flash rust by rubbing paint thinner onto the surface.
For steel use a latex bonding primer instead of a regular metal paint primer.
How to paint steel siding.
If your paint is dripping then you have too much.
When ready pour the primer into the paint container on the sprayer or pour the primer into the paint tray.
The aluminum siding was a shade of beige that had aged into a dull mustard tone and the trim was a rust colored reddish brown.
Start at the top of the wall and across the length of the metal siding.
Then apply the primer to the metal siding in even strokes.
Paint in long even strokes making sure not to overdo it.
Step 1 clean the steel siding.