P O S T G A L VA N I Z I N G T R E A T M E N T Although the look of galv anized steel is gaining in popularity namely for residential applications painting over galv anized steel is often required T hankfully this pr actice is widely used and its technique usually mastered by paint professionals Here is an overview of the specifc conditions that need to be followed in order to proceed with postgalv anizing painting T he following content addresses surface prepar ation in relation to painting over galv anized steel Why paint T he frst answer that comes to mind is for the look P aint can simply be prescribed by the architect but it can also serve as identifcation or extr a protection in a hostile environment P ainting over galv anized steel is known as Duplex system Benefts are P aint acts as a protection barrier for galv anized steel Galv anizing s corrosion protection properties are enhanced and optimized by the application of paint Scaling of paint is reduced thanks to the presence of the underlying galv anized steel Galv anizing and paint together offers longer lasting surface protection 15 to 25 times their individual servicelife 27