Browsing the "Algae" Category

Moss growing on roof

August 6th, 2013 | by Henri

Q.   In the last two years, moss has appeared on the asphalt shingles on the east side of my roof.


Black streaks on roof

March 4th, 2013 | by Henri

Q.    We have black streaks forming from bottom to top of our shingled roof.  Mostly shady areas, but sunny also.


Algae stains on roof

July 26th, 2012 | by Henri

Q. I have noticed, over a period of time, some ugly black stains on the roof of my 55-year-old Cape



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