This information is aimed at the residential customer but can easily pertain to a commercial application as well.
Painted metal roof before after.
Not using a sealant.
Painting a metal roof introduction.
Newly installed metal roofs should be allowed to weather for at least 6 months before you apply paint.
Prepainted metallic surfaces can be treated almost like any other basic latex or oil painted surface.
Before painting you ll still need to do a little bit of specialized prepping in case of rusting but the main process is fairly intuitive.
Painted metal roofs come with.
Just before painting wash the roof with a power washer at a pressure of 2 500 pounds per square inch whether it is a new or an old one that requires re painting.
However if you want to paint over prepainted metal you re in luck.
Since there are a wide variety of metal roof colors available you probably won t need to paint your roof within 6 months of installation anyway.
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Before you dive head long into painting your metal roof you need to determine what type of metal it is because although it may appear to be galvanized it may in fact be what is known as terne metal.
To paint a metal roof you ll need to use an oil based paint if you have a terne metal roof or an acrylic based paint if you have a galvanized metal roof.
Water resistant metal roofing paint for example can be of great value if you live in a rainy area.
You ll also need to purchase a primer designed for metal roofs.
If you want to paint a new metal roof though you can prepare it by washing with a weak acid.
If you re not sure what kind of roof you have ask a professional roofer to inspect it before you paint it.
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However all painted metal roofs have one downside in common and that is that they have to be repainted periodically.
Try to achieve a slightly abraded texturized finish as this helps your new paint bond with the roof finish.
Sand the entire metal roof surface very lightly with your wire brush or sandpaper.
Another mistake is to forget or ignore using a sealant before the application of the metal paint.