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.
Painting galvanised steel roof.
Acrylics are also more flexible than oil and thus handle movement in the metal better.
The secret to painting galvanized steel is white vinegar.
If you have a kitchen then you probably already have this handy solution.
Find either oil based or acrylic based paint at your local home improvement store.
Painting a galvanized steel panel roof is not all that different from painting other metal objects but you must ensure that the surface is perfectly clean before beginning the application process.
Use your putty knife or scraper to scrape off any peeling paint or accumulated rust on your metal roof.
All you have to do is simply apply the vinegar to a clean rag and then wipe down the galvanized surface.
If you re attempting to paint siding panels roof flashing or other materials that have seen exposure to the elements a thorough cleaning is necessary to eliminate any organic contaminants from the outer surface.
However paint on metal roofs often peels or rusts in which case it is time to repaint it.
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.
Common household products like comet mineral spirits and chlorine bleach can all be used to prepare galvanized steel for painting.
Certain roofing materials such as terne tin and galvanized steel accept waterborne coatings more readily than oil based coatings.
You can also use oil based alkyd paint but.
Get off as much paint or rust as you can.
They are also faster to dry allowing a painter to turn a job around quicker.
To ensure that you know what kind of metal your roof is made out of and what kind of paint you should use ask a professional roofer to inspect your home.
Be sure to cover the entire surface so that you cannot see any primer left.
A paint which will stick well like self etching primer is good and it s necessary if you have real rust.
Galvanized metal roofs are usually painted with acrylic based paint.