All you need to do is grab a wire brush a scraper and some cleaner degreaser.
How do you paint a rusty roof.
Link to product info on amazon first just in the rusted areas if the rusted areas are scattered then paint the whole roof.
Add an extra hour or two if the humidity is high.
Apply a coat of paint to the entire roof.
This will remove flaking rust and as much of the surface rust as.
Remove grease oil and other surface contaminants by cleaning with appropriate detergents something like rust oleum mathys nd14 cleaner degreaser is ideal.
Painting a rusted metal roof step 1.
Wash the galvanized metal using a pressure washer.
Scrape rust from the roof using a wire.
Again work from your ladder as much as possible.
Wait a full 24 hours for the roof to dry.
How to prepare a rusted galvanized metal roof for painting step 1.
Brushes and roller for priming rust spots 4.
Otherwise the metal will continue to shed the loose.
Wash the brush or roller you used for the primer or get a new one.
Wire brush and power tools 2.
Airless spray unit to coat the entire roof.
Wash the metal roof using trisodium phosphate in water at a ratio of 1 cup tsp per 1 gallon water.
Let the primer cure according to the manufacturer s instructions.
Access the rusted galvanized metal roof using an extension ladder.
A paint which will stick well like self etching primer is good and it s necessary if you have real rust.
Paint over the primer with a water based metal roof paint that contains rust.
A primer can help paint adhere to a rusted metal piece but you still must first remove as much loose rust as possible from the surface first.
Apply a primer to.
Then remove rust scale loose mill scale loose rust and loose coatings by scraping wire brushing and sanding.
You can apply something like ospho affil.