Prep Metal Roof For Paint

Galvanized metal roofs are coated with a layer of zinc that inhibits rust.

Prep metal roof for paint.

Before you begin read the labels on all products you re using making sure they are suitable for the type of metal and compatible with each other. Water resistant metal roofing paint for example can be of great value if you live in a rainy area. 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. You ll also need to purchase a primer designed for metal roofs.

Unfortunately over time this coating can fail leading to minor rust outbreaks. If you want to paint a new metal roof though you can prepare it by washing with a weak acid such as diluted vinegar to remove oils and residue first. Before painting on metal prepare the surface so it s clean and rust free. If you are preparing to paint a rusted galvanized metal roof pay special attention to surface preparation or you will have a recurrence of rust and or flaking.

This is why when you are considering painting your metal roofing it makes sense to go for specific paints for the metal roof. If crawling around on a metal roof in the hot sun does. One of my neighbors used an oil based paint as a primer since some of the metal was rusted and then covered the roof with one of the specially formulated roofing paints that is sold by calbar for use on old. 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.

If you re not sure what kind of roof you have ask a professional roofer to inspect it before you paint it. You can update your roof and prevent further rusting by cleaning it up and giving it a fresh coat of paint. Sand the entire metal roof surface very lightly with your wire brush or sandpaper. It should appear dull rather than shiny.

This article is meant to clarify the answers to some of the most common questions our customers have about painting a metal roof. Not using a sealant. Metal roofs are prone to rust because they are constantly exposed to the elements. The basic steps for surface prep are.

If properly painted the paint will not only improve the appearance but protect the roof from further rusting. Apply the sherwin williams paint and primer to a galvanized roof with a paintbrush or a roller specifically designed for corrugated metal. This information is aimed at the residential customer but can easily pertain to a commercial application as well. Terne is best painted with an oil based paint.

Try to achieve a slightly abraded texturized finish as this helps your new paint bond with the roof finish.