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Nononono! Tell him to save his latex paint! I sometimes paint things at industrial sites. Latex works fine on the buildings, but when it is used on steelwork of any kind, it turns into an unmitigated disaster, that you pay for for decades. This is a metal thing left outdoors. It will have much higher extremes of temperature than a house's walls. It ...


1

If the channel of the siding has already been painted, and the paint seems to be adhering well, then you might be able to get away with just spraying over it after a good power wash. It has been my experience that paint in small channels binds better to the bottoms and sides than the surface, compared to a smooth flat surface. However, I'm a big proponent of ...


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