Painting Galvanized Tin Roof

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 galvanized tin roof.

If crawling around on a metal roof in the hot sun does. 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. Terne is best painted with an oil based paint.

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. Galvanized metal roofs are coated with a layer of zinc that inhibits rust. Start by cleaning the. This roof is too huge to wash with household vinegar or tsp or even light sandblasting would take forever 1978 section a softer smoother type of metal roofing in sheets which are 100 and rust free doesn t need paint at all but needs to match the older roof which really needs paint.

Some people use acrylic latex paint which is not designed specifically for galvanized metal so you will want to prime the surface before painting. However paint on metal roofs often peels or rusts in which case it is time to repaint it. Galvanized roofs require the use of a different paint than what is used on terne metal. Before you jump right into it it s critical to prep the nonstick surface so it can hold paint.

Because of its smooth slick zinc coated finish galvanized steel can be tricky to paint. Do not use alkyd based paints or oil based primer. 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. Apply the sherwin williams paint and primer to a galvanized roof with a paintbrush or a roller specifically designed for corrugated metal.

Go over the metal with a wire brush to remove any oxidation. If you re not sure what kind of roof you have ask a professional roofer to inspect it before you paint it. How to paint galvanized steel. Unfortunately over time this coating can fail leading to minor rust outbreaks.