How To Prep A Metal Roof For Painting

Apply the sherwin williams paint and primer to a galvanized roof with a paintbrush or a roller specifically designed for corrugated metal.

How to prep a metal roof for painting.

Another mistake is to forget or ignore using a sealant before the application of the metal paint. If crawling around on a metal roof in the hot sun does. Before painting on metal prepare the surface so it s clean and rust free. Not using a sealant.

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. Galvanized roofs require the use of a different paint than what is used on terne metal. 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. Water resistant metal roofing paint for example can be of great value if you live in a rainy area.

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. Unfortunately over time this coating can fail leading to minor rust outbreaks. You ll also need to purchase a primer designed for metal roofs. Try to achieve a slightly abraded texturized finish as this helps your new paint bond with the roof finish.

Galvanized metal roofs are coated with a layer of zinc that inhibits rust. This information is aimed at the residential customer but can easily pertain to a commercial application as well. This article is meant to clarify the answers to some of the most common questions our customers have about painting a metal roof. The basic steps for surface prep are.

It should appear dull rather than shiny. This is why when you are considering painting your metal roofing it makes sense to go for specific paints for the metal roof. Painting a metal roof introduction. Sand the entire metal roof surface very lightly with your wire brush or sandpaper.