What is the right way to remove moss on composition roofing?

Discussion in 'Remodel Forum & Blog' started by Mad Plumber, May 18, 2010.

  1. Mad Plumber

    Mad Plumber Mad Skills

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    What is the right way to remove moss on composition roofing?
  2. Dana

    Dana In the trades

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    I haven't tested it, but I've read that a strip of copper or zinc flashing peeking out from an upper course of shingles has sufficient toxicity to kill & prevent moss from growing down-slope of the exposed copper.

    I'm sure it would take some time if the moss was well-established. You can kill the moss by spraying concentrated bleach on it, then hose it off weeks later when it's dried up & crumbling.
  3. Dana

    Dana In the trades

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    Last edited: May 20, 2010
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