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Are the spots inside the red circles moss?

Is zinc strip on slate roof a good idea to prevent moss? Thank you.

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bobby_yan
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    if you are going to ask about something in a picture, then make sure the area of interest fills much, much more that 1% of the image – jsotola Jul 22 '22 at 18:03
  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. – Community Jul 22 '22 at 18:55
  • @jsotola If you click the image twice, it will change to the high resolution version. I intentionally keep the full photo to provide some context information, e.g. surrounding environment and possible moss around, and they might be helpful clue for someone willing to help. – bobby_yan Jul 28 '22 at 01:59

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Photos 2 and 3 look more like lichen than moss. The first one might be moss. The easiest solution is to ignore it. It's harmless.

Simon B
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