Can You Paint Over A Metal Roof

To prep metal for paint adhesion you must.

Can you paint over a metal roof.

People assume that if they use waterproof paint it will be better for their roof but instead of protecting your shingles it creates a barrier that traps moisture in leaving your home at the risk of molding. Sand the entire metal roof surface very lightly with your wire brush or sandpaper. Acrylic latex paint is a good choice for bare metal roofs and to go over old paint. Oil based alkyd paint may also be used with an appropriate galvanized metal primer.

For instance if you re painting a smaller roof you might use 80 120 grit sandpaper or a wire brush. To help the primer and paint adhere to the roof better try lightly scuffing the surface of the metal. If you have a terne metal roof like this one then it has probably been repainted several times over the years. Before painting you ll still need to do a little.

Although it isn t recommended to use a metal implement to scrape the roof it was the only way to remove the loose rust and old paint. Don t worry about patches where the paint is in good shape as you can simply paint over those. Water resistant metal roofing paint for example can be of great value if you live in a rainy area. If you paint the roof you should paint both sections.

Not using a sealant. A topcoat doesn t eliminate the need for a good primer the topcoat seals your paint but the primer makes the paint adhere properly. Try to achieve a slightly abraded texturized finish as this helps your new paint bond with the roof finish. If you choose the wrong paint you are putting your roof at the risk of molding and rotting over time.

Another mistake is to forget or ignore using a sealant before the application of the metal paint. Metal surfaces require specialized primer and paint for good paint adhesion. Its likely the color variance will tone down over time. Metal can be painted and coated over and the darker the color the more of the suns radiant energy it will absorb i e.

Prepainted metallic surfaces can be treated almost like any other basic latex or oil painted surface. This is why when you are considering painting your metal roofing it makes sense to go for specific paints for the metal roof. Atmospheric dirt will help mute the difference as well.