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Roof Stain History Why are my shingles turning black?
What about Shingle Manufacturers?

Roof Stains : The History

Black streaked roof, Blotches, algae growth, shingle stains, roof mold, roof fungus...
Call it what you like. 

Roof Mold Stains are a real problem and recent problem. 

Stained Roofs are:
  •  unattractive,
  • reduce home resale value,
  • and lead to premature replacement of shingles, wasted space in landfills, and additional CO2 release caused by the shingle manufacturing process.

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