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  2. Roof cleaning - Wikipedia

    en.wikipedia.org/wiki/Roof_cleaning

    The roof cleaning of fiberglass shingles Streaking on a roof Roof cleaning being performed using a soft-wash system. Roof cleaning is the process of removing algae, [1] mold, mildew, lichen and moss from roofs. [2] Also cleaning oxidation on metal roofs. Cleaning can extend the duration of a roof's ability to function. [2]

  3. Gloeocapsa magma - Wikipedia

    en.wikipedia.org/wiki/Gloeocapsa_magma

    This cyanobacteria causes substantial destruction to roofs causing shingle decay and loss of reflective power. Over time, Gloeocapsa magma breaks down the shingles by feeding off of the limestone granules embedded in the shingles.

  4. An insurer dropped these San Francisco homeowners ... - AOL

    www.aol.com/finance/insurer-dropped-san...

    An aerial photograph that allegedly showed "moss, mildew, algae, and mold" on their roof. But the picture, which appeared to be from Google Earth, showed "absolutely nothing!" Karen Hoover told ...

  5. Algaecide - Wikipedia

    en.wikipedia.org/wiki/Algaecide

    Barley straw, in England, is placed in mesh bags and floated in fish ponds or water gardens to help reduce algal growth without harming pond plants and animals. Barley straw has not been approved by the United States Environmental Protection Agency (EPA) for use as a pesticide and its effectiveness as an algaecide in ponds has produced mixed results during university testing in the United ...

  6. ‘Bad way to be treated’: California couple got dropped by ...

    www.aol.com/finance/bad-way-treated-california...

    Liberty Mutual claimed the roof had moss, mildew and algae growth, but the Colemans insist the alleged damage was simply their solar panels. ... To reduce insurance costs, you can take steps like ...

  7. Asphalt shingle - Wikipedia

    en.wikipedia.org/wiki/Asphalt_shingle

    Different treatment methods are used to prevent discoloration from algae growth on the roof. Moss feeds on algae and any other debris on the roof. Some manufactures offer a 5- to 10-year warranty against algae growth on their algae resistant shingles. Locking shingles: Special asphalt shingles are designed to lock together called tie lock or T ...