Sweep off the roof using a broom to remove all pine straw leaves and surface dirt.
Galvanised iron roof paint.
Old galvanised iron may lose the protective zinc coating and red rusting may then occur.
How to paint galvanized steel roofing panels.
Wait a full 24 hours for the roof to dry.
This layer causes most paint failures because it can be relatively weak.
Rather this is just a phenomenon that often occurs in galvanized materials due to intermetallic alloying of iron and zinc i understand and is not indicative of the end of the useful life of the galvanizing.
Place a ladder next to the structure and climb up it to access the roof.
Access the rusted galvanized metal roof using an extension ladder.
Scrape rust from the roof using a wire brush.
Many metal roofs are made out of galvanized metal which is a type of metal that has been covered with hot zinc in order to protect it from the weather.
The surface of zinc metal oxidises rapidly to form a protective carbonate oxide layer which protects the zinc from further damage.
Use your putty knife or scraper to scrape off any peeling paint or accumulated rust on your metal roof.
Painted metal roofs come with a baked on factory finish and you can re coat these as well as paint bare metal roofing with acrylic latex paint.
You can also use oil based alkyd paint but.
How to prepare a rusted galvanized metal roof for painting.
Get off as much paint or rust as you can.
Get free shipping on qualified galvanized metal primers or buy online pick up in store today in the paint department.
This results in paint flaking.
However paint on metal roofs often peels or rusts in which case it is time to repaint it.