algae Archives - On the House

All posts tagged "algae"

  • roof algae
    Roof Algae

    Question I have a northern exposure to the front of my house. It does not get direct sun. I live in Sussex County, DE. mid-Atlantic area. I have black streaks and a slight green color (moss?). I...

    • Posted April 17, 2014
    • 0
  • Wet and Forget

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