Removing Rust On Metal Roof

Cover the bare areas quickly with something like rustoleum primer for rusted metal then paint with an epoxy type paint.
Removing rust on metal roof. The presence of any amount of rust is a sign the protective coating has failed. Shirlock homes may 26 14 at 10 51. Removing rust from your metal roof should always be a priority. Most of the time not every speck of rust needs to be removed before recoating a rusted metal roof.
If the roof has been painted some years before use a drill with a wire brush to eliminate problem rust patches. If you have a house or outbuilding with an older galvanized metal roof the best way to avoid rust problems is to paint the roof. Metal roofs suffer most in wet and humid environments. The water or sand will also remove dirt mildew and flaking paint from the surface.
Use a wire brush to scrub away the rust spots. Be careful using chemical rust removers. A grinder fitted with a stripping disc grinding wheel fiber or flap disc makes quick work of heavy rust on large objects. They can damage painted surfaces as well as remove rust.
A rotary wire wheel on a drill is a good way to buff rust off. Instead use a heavy power washer or a light sand blaster to blast away all the loose flaking rust. Sweep away any leaves or other debris that may be on the roof. This will remove any scaled rust as well as any flaking paint.
Coatings such as zinc and additional layers of paint on galvanised corrugated steel roof sheets are all vulnerable. After removing the rust rinse. Grind sand or scour off the rust if you re not into chemicals and you want to remove the paint along with the rust use a power tool like a grinder sander oscillating tool or drill to remove rust from tools. Wear goggles and gloves to protect your hands and eyes.
Start by power washing the roof.