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Main Line, pa
Posts: 210
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Georgetown, KY
Posts: 2179
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Newberg, OR
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 What is the point of this flashing?
[#3] Posted: 10/05/2009 - 2:39:49 PM |  |  |
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They are to help prevent moss/ algae growth. I'm sure you've seen how clean older roofs are directly below metal vents, while there is moss or algae elsewhere? Same idea, but these strips don't tend to work well. Also, I consider the holes a problem, but rarely problems as a result.
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Brandon
Portland Home Inspector |
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Main Line, pa
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What is the point of this flashing?
[#4] Posted: 10/05/2009 - 2:51:47 PM | | |
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How does that work? Is it a reaction with the metal and the water that prevents the algea growth? (just in case im asked...)
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Main Line, pa
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What is the point of this flashing?
[#5] Posted: 10/05/2009 - 2:54:29 PM | | |
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I found this... Thanks...
"While inspecting the roof you will notice there are no algae stains directly below the metal flashings, flue pipes or roof vents. Why? Because metal oxides (rust) released when rain hits the metal prevent the formation and growth of algae."
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