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Recently bought a 19 year old house with a brown metal roof. The paint on a large part of the south side of the roof is pretty much gone (looks like grey paint rather than brown). Perhaps it's primer that's showing since I don't see any rust. The roof is long down the south side and I suspect that snow/ice sliding off have scraped the original color off especially last winter. The roof looks good otherwise. What should be done with this type of situation? Repaint? Expect to replace roof in ten years or so? Other? Thank you!
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Yes you are probably seeing the primer. probably it was a utility product and not have the high performance finishes available today. If you do nothing the primer will dissappear generally over a couple of years as it is not UV protected and then the metalic substrate will be exposed. Again it depends on the type of substate and the thickness of metalic coating. If it is a G90 galvanized it should protect from rust for 15 years. If the roof is performing well then I would suggest painting it and you will have it forever.
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Thank you. I am in a rural, mountainous area and it may be that I will have to repaint the roof myself though I would prefer to hire it done. Can you comment on the following DIY plan please.
Since primer is still there, I will wash the area where paint is missing and brush on new paint (trying to match the existing brown). Will not have much water pressure for washing (high (two story) roof and spring water system) so will rely on scrubbing the surface by hand.
Is there a brush on paint and what paint is good for this purpose? Can brushing on the paint on metal look ok or is this not really an option? The roof is steep so have bought a rock-climbing harness and rope to tether myself for this work and hopefully be able to work effectively both washing and painting.
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Go to a quality name brand paint store and ask them what system they suggest for repainting metal building products. It would be preferable to use their primer followed by their top coat.
That is as good as you will be able to get quality wise unless you hook up with a roofing manufacturer to get an air-dry Kynar but it will be about $250 - 300 per gallon.
Application by brush will be slow but not impossible. Spraying or rolling would be faster.
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Trying to get going on this now (after long unfortunate but unavoidable delay). Forecasted temperatures for next week are H: 70 L: 38; H: 73 L: 40; H: 73 L: 40; H: 73 L: 42; H: 71 L: 41; H: 72 L: 42; no precipitation. I hope it's not close to winter. Is this fall weather already too cold for the paint or ? Thank you.
7/7/2005
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7/7/2005
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7/8/2005
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10/7/2007
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