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I have a Craftsman house that has a light grey metal roof that was installed in 1986 to replace the original metal roof.
I am going to be repairing/replacing the siding on our home next year and have found through my research that green,brown or red were more traditional roof colors for Craftsman homes. The grey roof also greatly limits my color choices for my house.
I see from reading through some other threads that I can paint our roof but that the finish won't last like the original paint. Just how long should a "repaint" last? And what kind of paint is best to use?
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The quality consumer paint companies, such as Sherwin Williams, have commercially available paint systems which are suitable for repainting metal roofing. However, pigmentation can be an issue, especially with darker and more vibrant colors. For example, a southern exposure repainted roof in red or blue will show substantial change after just maybe 5 years. Northern exposure is much easier on these products. However, you will still get better life out of light colors and colors which are "muddy" rather than real rich and vibrant.
Now, the next step up is to apply an air-dry Kynar/Hylar paint system. This would probably have to be acquired through a metal roofing manufacturer. The air-dry formulations are subject to more uncertainty than the bake-on systems we use but they still will have pretty good life, again based upon color chosen and geographic exposure. However, expect to pay a price approaching $300 per gallon for air-dry Kynar/Hylar.
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I assume you are referring to copper or some other unpainted metal. In that case, yes, if you go tot the manufacturer of your roofing, they can probably make some suggestions for chemical coatings. However, keep in mind that, on some metals, starting this process can lead to premature deterioration of the metal.
8/3/2004
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